Finding the Fourth Proportional to 1,404.05, 1,937.58 and 814.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.05 : 1,937.58 = 814.70 : x
2. Step 2: Convert to fraction form
   1,404.05/1,937.58 = 814.70/x
3. Step 3: Cross multiply
   1,404.05x = 1,937.58 × 814.70
4. Step 4: Simplify right side
   1,404.05x = 1,578,536.74
5. Step 5: Solve for x
   x = 1,578,536.74/1,404.05
6. Step 6: Final answer
   x = 1,124.28