Finding the Fourth Proportional to 1,525.60, 2,105.52 and 904.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.60 : 2,105.52 = 904.64 : x
2. Step 2: Convert to fraction form
   1,525.60/2,105.52 = 904.64/x
3. Step 3: Cross multiply
   1,525.60x = 2,105.52 × 904.64
4. Step 4: Simplify right side
   1,525.60x = 1,904,737.61
5. Step 5: Solve for x
   x = 1,904,737.61/1,525.60
6. Step 6: Final answer
   x = 1,248.52