Finding the Fourth Proportional to 3,238,978.30, 4,861,405.05 and 1,642,651.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,238,978.30 : 4,861,405.05 = 1,642,651.90 : x
2. Step 2: Convert to fraction form
   3,238,978.30/4,861,405.05 = 1,642,651.90/x
3. Step 3: Cross multiply
   3,238,978.30x = 4,861,405.05 × 1,642,651.90
4. Step 4: Simplify right side
   3,238,978.30x = 7,985,596,242,052.10
5. Step 5: Solve for x
   x = 7,985,596,242,052.10/3,238,978.30
6. Step 6: Final answer
   x = 2,465,467.66