Finding the Fourth Proportional to 1,182.31, 1,773.29 and 402.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.31 : 1,773.29 = 402.31 : x
2. Step 2: Convert to fraction form
   1,182.31/1,773.29 = 402.31/x
3. Step 3: Cross multiply
   1,182.31x = 1,773.29 × 402.31
4. Step 4: Simplify right side
   1,182.31x = 713,415.52
5. Step 5: Solve for x
   x = 713,415.52/1,182.31
6. Step 6: Final answer
   x = 603.41