Finding the Fourth Proportional to 2,838,978.77, 4,259,139.39 and 919,886.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,838,978.77 : 4,259,139.39 = 919,886.81 : x
2. Step 2: Convert to fraction form
   2,838,978.77/4,259,139.39 = 919,886.81/x
3. Step 3: Cross multiply
   2,838,978.77x = 4,259,139.39 × 919,886.81
4. Step 4: Simplify right side
   2,838,978.77x = 3,917,926,146,812.45
5. Step 5: Solve for x
   x = 3,917,926,146,812.45/2,838,978.77
6. Step 6: Final answer
   x = 1,380,047.71