Finding the Fourth Proportional to 2,521,154, 3,781,763.94 and 838,257.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521,154 : 3,781,763.94 = 838,257.50 : x
2. Step 2: Convert to fraction form
   2,521,154/3,781,763.94 = 838,257.50/x
3. Step 3: Cross multiply
   2,521,154x = 3,781,763.94 × 838,257.50
4. Step 4: Simplify right side
   2,521,154x = 3,170,091,985,934.55
5. Step 5: Solve for x
   x = 3,170,091,985,934.55/2,521,154
6. Step 6: Final answer
   x = 1,257,397.20