Finding the Fourth Proportional to 2,117,078.56, 3,175,612.98 and 918,845.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,078.56 : 3,175,612.98 = 918,845.56 : x
2. Step 2: Convert to fraction form
   2,117,078.56/3,175,612.98 = 918,845.56/x
3. Step 3: Cross multiply
   2,117,078.56x = 3,175,612.98 × 918,845.56
4. Step 4: Simplify right side
   2,117,078.56x = 2,917,897,886,951.37
5. Step 5: Solve for x
   x = 2,917,897,886,951.37/2,117,078.56
6. Step 6: Final answer
   x = 1,378,266.23