Finding the Fourth Proportional to 1,404.04, 1,938 and 814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.04 : 1,938 = 814.72 : x
2. Step 2: Convert to fraction form
   1,404.04/1,938 = 814.72/x
3. Step 3: Cross multiply
   1,404.04x = 1,938 × 814.72
4. Step 4: Simplify right side
   1,404.04x = 1,578,927.36
5. Step 5: Solve for x
   x = 1,578,927.36/1,404.04
6. Step 6: Final answer
   x = 1,124.56