Finding the Fourth Proportional to 1,404.52, 1,938.02 and 815.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.52 : 1,938.02 = 815.08 : x
2. Step 2: Convert to fraction form
   1,404.52/1,938.02 = 815.08/x
3. Step 3: Cross multiply
   1,404.52x = 1,938.02 × 815.08
4. Step 4: Simplify right side
   1,404.52x = 1,579,641.34
5. Step 5: Solve for x
   x = 1,579,641.34/1,404.52
6. Step 6: Final answer
   x = 1,124.68