Finding the Fourth Proportional to 2,838,978.27, 4,259,138.64 and 919,886.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,838,978.27 : 4,259,138.64 = 919,886.31 : x
2. Step 2: Convert to fraction form
   2,838,978.27/4,259,138.64 = 919,886.31/x
3. Step 3: Cross multiply
   2,838,978.27x = 4,259,138.64 × 919,886.31
4. Step 4: Simplify right side
   2,838,978.27x = 3,917,923,327,328.02
5. Step 5: Solve for x
   x = 3,917,923,327,328.02/2,838,978.27
6. Step 6: Final answer
   x = 1,380,046.96