Finding the Fourth Proportional to 1,403.76, 1,937.25 and 814.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.76 : 1,937.25 = 814.17 : x
2. Step 2: Convert to fraction form
   1,403.76/1,937.25 = 814.17/x
3. Step 3: Cross multiply
   1,403.76x = 1,937.25 × 814.17
4. Step 4: Simplify right side
   1,403.76x = 1,577,250.83
5. Step 5: Solve for x
   x = 1,577,250.83/1,403.76
6. Step 6: Final answer
   x = 1,123.59