Finding the Fourth Proportional to 2,805,551.22, 4,208,452.05 and 860,139.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805,551.22 : 4,208,452.05 = 860,139.83 : x
2. Step 2: Convert to fraction form
   2,805,551.22/4,208,452.05 = 860,139.83/x
3. Step 3: Cross multiply
   2,805,551.22x = 4,208,452.05 × 860,139.83
4. Step 4: Simplify right side
   2,805,551.22x = 3,619,857,216,085.98
5. Step 5: Solve for x
   x = 3,619,857,216,085.98/2,805,551.22
6. Step 6: Final answer
   x = 1,290,248.13