Finding the Fourth Proportional to 1,131.52, 1,698.24 and 904.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.52 : 1,698.24 = 904.96 : x
2. Step 2: Convert to fraction form
   1,131.52/1,698.24 = 904.96/x
3. Step 3: Cross multiply
   1,131.52x = 1,698.24 × 904.96
4. Step 4: Simplify right side
   1,131.52x = 1,536,839.27
5. Step 5: Solve for x
   x = 1,536,839.27/1,131.52
6. Step 6: Final answer
   x = 1,358.21