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Finding the Fourth Proportional to 1,845.80, 2,765.82 and 1,290.92

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Solution

The fourth proportional to 1,845.80, 2,765.82 and 1,290.92 is: 1,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.80 : 2,765.82 = 1,290.92 : x
  2. Step 2: Convert to fraction form
    1,845.80/2,765.82 = 1,290.92/x
  3. Step 3: Cross multiply
    1,845.80x = 2,765.82 × 1,290.92
  4. Step 4: Simplify right side
    1,845.80x = 3,570,452.35
  5. Step 5: Solve for x
    x = 3,570,452.35/1,845.80
  6. Step 6: Final answer
    x = 1,934.37

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