Finding the Fourth Proportional to 3,178,978.39, 4,386,856.62 and 1,802,414.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,178,978.39 : 4,386,856.62 = 1,802,414.71 : x
2. Step 2: Convert to fraction form
   3,178,978.39/4,386,856.62 = 1,802,414.71/x
3. Step 3: Cross multiply
   3,178,978.39x = 4,386,856.62 × 1,802,414.71
4. Step 4: Simplify right side
   3,178,978.39x = 7,906,934,902,548.88
5. Step 5: Solve for x
   x = 7,906,934,902,548.88/3,178,978.39
6. Step 6: Final answer
   x = 2,487,256.58