Finding the Fourth Proportional to 3,439,978.32, 4,747,173.15 and 1,891,266.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,439,978.32 : 4,747,173.15 = 1,891,266.38 : x
2. Step 2: Convert to fraction form
   3,439,978.32/4,747,173.15 = 1,891,266.38/x
3. Step 3: Cross multiply
   3,439,978.32x = 4,747,173.15 × 1,891,266.38
4. Step 4: Simplify right side
   3,439,978.32x = 8,978,168,978,633.70
5. Step 5: Solve for x
   x = 8,978,168,978,633.70/3,439,978.32
6. Step 6: Final answer
   x = 2,609,949.29