Finding the Fourth Proportional to 1,557.08, 2,147.86 and 1,025.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557.08 : 2,147.86 = 1,025.82 : x
2. Step 2: Convert to fraction form
   1,557.08/2,147.86 = 1,025.82/x
3. Step 3: Cross multiply
   1,557.08x = 2,147.86 × 1,025.82
4. Step 4: Simplify right side
   1,557.08x = 2,203,317.75
5. Step 5: Solve for x
   x = 2,203,317.75/1,557.08
6. Step 6: Final answer
   x = 1,415.03