Finding the Fourth Proportional to 2,396.34, 3,308.30 and 1,557.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,396.34 : 3,308.30 = 1,557.78 : x
2. Step 2: Convert to fraction form
   2,396.34/3,308.30 = 1,557.78/x
3. Step 3: Cross multiply
   2,396.34x = 3,308.30 × 1,557.78
4. Step 4: Simplify right side
   2,396.34x = 5,153,595.79
5. Step 5: Solve for x
   x = 5,153,595.79/2,396.34
6. Step 6: Final answer
   x = 2,150.61