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Finding the Fourth Proportional to 1,193.78, 1,790 and 371.84

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Solution

The fourth proportional to 1,193.78, 1,790 and 371.84 is: 557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.78 : 1,790 = 371.84 : x
  2. Step 2: Convert to fraction form
    1,193.78/1,790 = 371.84/x
  3. Step 3: Cross multiply
    1,193.78x = 1,790 × 371.84
  4. Step 4: Simplify right side
    1,193.78x = 665,593.60
  5. Step 5: Solve for x
    x = 665,593.60/1,193.78
  6. Step 6: Final answer
    x = 557.55

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