Finding the Fourth Proportional to 1,562.38, 2,155.07 and 1,038.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.38 : 2,155.07 = 1,038.42 : x
2. Step 2: Convert to fraction form
   1,562.38/2,155.07 = 1,038.42/x
3. Step 3: Cross multiply
   1,562.38x = 2,155.07 × 1,038.42
4. Step 4: Simplify right side
   1,562.38x = 2,237,870.39
5. Step 5: Solve for x
   x = 2,237,870.39/1,562.38
6. Step 6: Final answer
   x = 1,432.35