Finding the Fourth Proportional to 2,430.42, 3,650.31 and 2,158.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,430.42 : 3,650.31 = 2,158.86 : x
2. Step 2: Convert to fraction form
   2,430.42/3,650.31 = 2,158.86/x
3. Step 3: Cross multiply
   2,430.42x = 3,650.31 × 2,158.86
4. Step 4: Simplify right side
   2,430.42x = 7,880,508.25
5. Step 5: Solve for x
   x = 7,880,508.25/2,430.42
6. Step 6: Final answer
   x = 3,242.45