Finding the Fourth Proportional to 2,986,978.32, 4,479,975 and 1,281,396.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986,978.32 : 4,479,975 = 1,281,396.96 : x
2. Step 2: Convert to fraction form
   2,986,978.32/4,479,975 = 1,281,396.96/x
3. Step 3: Cross multiply
   2,986,978.32x = 4,479,975 × 1,281,396.96
4. Step 4: Simplify right side
   2,986,978.32x = 5,740,626,345,876
5. Step 5: Solve for x
   x = 5,740,626,345,876/2,986,978.32
6. Step 6: Final answer
   x = 1,921,884.17