Finding the Fourth Proportional to 1,402.58, 1,935.61 and 773.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.58 : 1,935.61 = 773.15 : x
2. Step 2: Convert to fraction form
   1,402.58/1,935.61 = 773.15/x
3. Step 3: Cross multiply
   1,402.58x = 1,935.61 × 773.15
4. Step 4: Simplify right side
   1,402.58x = 1,496,505.26
5. Step 5: Solve for x
   x = 1,496,505.26/1,402.58
6. Step 6: Final answer
   x = 1,066.96