Finding the Fourth Proportional to 2,411.78, 3,330.32 and 1,529.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.78 : 3,330.32 = 1,529.15 : x
2. Step 2: Convert to fraction form
   2,411.78/3,330.32 = 1,529.15/x
3. Step 3: Cross multiply
   2,411.78x = 3,330.32 × 1,529.15
4. Step 4: Simplify right side
   2,411.78x = 5,092,534.53
5. Step 5: Solve for x
   x = 5,092,534.53/2,411.78
6. Step 6: Final answer
   x = 2,111.53