Finding the Fourth Proportional to 1,562.71, 2,155.71 and 1,058.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.71 : 2,155.71 = 1,058.57 : x
2. Step 2: Convert to fraction form
   1,562.71/2,155.71 = 1,058.57/x
3. Step 3: Cross multiply
   1,562.71x = 2,155.71 × 1,058.57
4. Step 4: Simplify right side
   1,562.71x = 2,281,969.93
5. Step 5: Solve for x
   x = 2,281,969.93/1,562.71
6. Step 6: Final answer
   x = 1,460.27