Finding the Fourth Proportional to 3,978.18, 5,490.08 and 2,299.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.18 : 5,490.08 = 2,299.83 : x
2. Step 2: Convert to fraction form
   3,978.18/5,490.08 = 2,299.83/x
3. Step 3: Cross multiply
   3,978.18x = 5,490.08 × 2,299.83
4. Step 4: Simplify right side
   3,978.18x = 12,626,227.22
5. Step 5: Solve for x
   x = 12,626,227.22/3,978.18
6. Step 6: Final answer
   x = 3,173.87