Finding the Fourth Proportional to 2,393.56, 3,302.31 and 1,555.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,393.56 : 3,302.31 = 1,555.30 : x
2. Step 2: Convert to fraction form
   2,393.56/3,302.31 = 1,555.30/x
3. Step 3: Cross multiply
   2,393.56x = 3,302.31 × 1,555.30
4. Step 4: Simplify right side
   2,393.56x = 5,136,082.74
5. Step 5: Solve for x
   x = 5,136,082.74/2,393.56
6. Step 6: Final answer
   x = 2,145.79