Finding the Fourth Proportional to 1,570.52, 2,168.72 and 1,153.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.52 : 2,168.72 = 1,153.25 : x
2. Step 2: Convert to fraction form
   1,570.52/2,168.72 = 1,153.25/x
3. Step 3: Cross multiply
   1,570.52x = 2,168.72 × 1,153.25
4. Step 4: Simplify right side
   1,570.52x = 2,501,070.57
5. Step 5: Solve for x
   x = 2,501,070.57/1,570.52
6. Step 6: Final answer
   x = 1,592.51