Finding the Fourth Proportional to 1,025.38, 1,543.61 and 936.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.38 : 1,543.61 = 936.10 : x
2. Step 2: Convert to fraction form
   1,025.38/1,543.61 = 936.10/x
3. Step 3: Cross multiply
   1,025.38x = 1,543.61 × 936.10
4. Step 4: Simplify right side
   1,025.38x = 1,444,973.32
5. Step 5: Solve for x
   x = 1,444,973.32/1,025.38
6. Step 6: Final answer
   x = 1,409.21