Finding the Fourth Proportional to 1,842,686.32, 2,764,423.12 and 644,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842,686.32 : 2,764,423.12 = 644,647.72 : x
2. Step 2: Convert to fraction form
   1,842,686.32/2,764,423.12 = 644,647.72/x
3. Step 3: Cross multiply
   1,842,686.32x = 2,764,423.12 × 644,647.72
4. Step 4: Simplify right side
   1,842,686.32x = 1,782,079,061,423.29
5. Step 5: Solve for x
   x = 1,782,079,061,423.29/1,842,686.32
6. Step 6: Final answer
   x = 967,109.29