Finding the Fourth Proportional to 2,606.32, 3,911.40 and 1,025.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.32 : 3,911.40 = 1,025.28 : x
2. Step 2: Convert to fraction form
   2,606.32/3,911.40 = 1,025.28/x
3. Step 3: Cross multiply
   2,606.32x = 3,911.40 × 1,025.28
4. Step 4: Simplify right side
   2,606.32x = 4,010,280.19
5. Step 5: Solve for x
   x = 4,010,280.19/2,606.32
6. Step 6: Final answer
   x = 1,538.68