Finding the Fourth Proportional to 1,403.49, 1,937.21 and 814.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.49 : 1,937.21 = 814.26 : x
2. Step 2: Convert to fraction form
   1,403.49/1,937.21 = 814.26/x
3. Step 3: Cross multiply
   1,403.49x = 1,937.21 × 814.26
4. Step 4: Simplify right side
   1,403.49x = 1,577,388.54
5. Step 5: Solve for x
   x = 1,577,388.54/1,403.49
6. Step 6: Final answer
   x = 1,123.90