Finding the Fourth Proportional to 2,113.16, 2,917.24 and 1,525.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.16 : 2,917.24 = 1,525.10 : x
2. Step 2: Convert to fraction form
   2,113.16/2,917.24 = 1,525.10/x
3. Step 3: Cross multiply
   2,113.16x = 2,917.24 × 1,525.10
4. Step 4: Simplify right side
   2,113.16x = 4,449,082.72
5. Step 5: Solve for x
   x = 4,449,082.72/2,113.16
6. Step 6: Final answer
   x = 2,105.42