Finding the Fourth Proportional to 2,415.96, 3,332.84 and 1,520.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.96 : 3,332.84 = 1,520.78 : x
2. Step 2: Convert to fraction form
   2,415.96/3,332.84 = 1,520.78/x
3. Step 3: Cross multiply
   2,415.96x = 3,332.84 × 1,520.78
4. Step 4: Simplify right side
   2,415.96x = 5,068,492.15
5. Step 5: Solve for x
   x = 5,068,492.15/2,415.96
6. Step 6: Final answer
   x = 2,097.92