Finding the Fourth Proportional to 2,774,978.40, 4,159,702.80 and 1,276,456.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774,978.40 : 4,159,702.80 = 1,276,456.80 : x
2. Step 2: Convert to fraction form
   2,774,978.40/4,159,702.80 = 1,276,456.80/x
3. Step 3: Cross multiply
   2,774,978.40x = 4,159,702.80 × 1,276,456.80
4. Step 4: Simplify right side
   2,774,978.40x = 5,309,680,925,039.04
5. Step 5: Solve for x
   x = 5,309,680,925,039.04/2,774,978.40
6. Step 6: Final answer
   x = 1,913,413.43