Finding the Fourth Proportional to 1,061,722.19, 1,591,008.59 and 779,861.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061,722.19 : 1,591,008.59 = 779,861.63 : x
2. Step 2: Convert to fraction form
   1,061,722.19/1,591,008.59 = 779,861.63/x
3. Step 3: Cross multiply
   1,061,722.19x = 1,591,008.59 × 779,861.63
4. Step 4: Simplify right side
   1,061,722.19x = 1,240,766,540,487.05
5. Step 5: Solve for x
   x = 1,240,766,540,487.05/1,061,722.19
6. Step 6: Final answer
   x = 1,168,635.79