Finding the Fourth Proportional to 2,715.13, 3,746.55 and 1,520.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.13 : 3,746.55 = 1,520.20 : x
2. Step 2: Convert to fraction form
   2,715.13/3,746.55 = 1,520.20/x
3. Step 3: Cross multiply
   2,715.13x = 3,746.55 × 1,520.20
4. Step 4: Simplify right side
   2,715.13x = 5,695,505.31
5. Step 5: Solve for x
   x = 5,695,505.31/2,715.13
6. Step 6: Final answer
   x = 2,097.69