Finding the Fourth Proportional to 1,025.43, 1,533.57 and 910.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.43 : 1,533.57 = 910.62 : x
2. Step 2: Convert to fraction form
   1,025.43/1,533.57 = 910.62/x
3. Step 3: Cross multiply
   1,025.43x = 1,533.57 × 910.62
4. Step 4: Simplify right side
   1,025.43x = 1,396,499.51
5. Step 5: Solve for x
   x = 1,396,499.51/1,025.43
6. Step 6: Final answer
   x = 1,361.87