Finding the Fourth Proportional to 2,776,602.90, 4,162,139.55 and 1,278,081.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776,602.90 : 4,162,139.55 = 1,278,081.30 : x
2. Step 2: Convert to fraction form
   2,776,602.90/4,162,139.55 = 1,278,081.30/x
3. Step 3: Cross multiply
   2,776,602.90x = 4,162,139.55 × 1,278,081.30
4. Step 4: Simplify right side
   2,776,602.90x = 5,319,552,726,845.42
5. Step 5: Solve for x
   x = 5,319,552,726,845.42/2,776,602.90
6. Step 6: Final answer
   x = 1,915,849.30