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Finding the Fourth Proportional to 1,945.82, 2,919.41 and 1,214.54

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Solution

The fourth proportional to 1,945.82, 2,919.41 and 1,214.54 is: 1,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.82 : 2,919.41 = 1,214.54 : x
  2. Step 2: Convert to fraction form
    1,945.82/2,919.41 = 1,214.54/x
  3. Step 3: Cross multiply
    1,945.82x = 2,919.41 × 1,214.54
  4. Step 4: Simplify right side
    1,945.82x = 3,545,719.55
  5. Step 5: Solve for x
    x = 3,545,719.55/1,945.82
  6. Step 6: Final answer
    x = 1,822.23

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