Finding the Fourth Proportional to 1,585,978.95, 2,188,592.31 and 860,811.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585,978.95 : 2,188,592.31 = 860,811.22 : x
2. Step 2: Convert to fraction form
   1,585,978.95/2,188,592.31 = 860,811.22/x
3. Step 3: Cross multiply
   1,585,978.95x = 2,188,592.31 × 860,811.22
4. Step 4: Simplify right side
   1,585,978.95x = 1,883,964,816,453.72
5. Step 5: Solve for x
   x = 1,883,964,816,453.72/1,585,978.95
6. Step 6: Final answer
   x = 1,187,887.66