Finding the Fourth Proportional to 3,606.96, 5,411.85 and 1,415.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.96 : 5,411.85 = 1,415.31 : x
2. Step 2: Convert to fraction form
   3,606.96/5,411.85 = 1,415.31/x
3. Step 3: Cross multiply
   3,606.96x = 5,411.85 × 1,415.31
4. Step 4: Simplify right side
   3,606.96x = 7,659,445.42
5. Step 5: Solve for x
   x = 7,659,445.42/3,606.96
6. Step 6: Final answer
   x = 2,123.52