Finding the Fourth Proportional to 1,219,046.88, 1,821,156.72 and 789,079.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219,046.88 : 1,821,156.72 = 789,079.68 : x
2. Step 2: Convert to fraction form
   1,219,046.88/1,821,156.72 = 789,079.68/x
3. Step 3: Cross multiply
   1,219,046.88x = 1,821,156.72 × 789,079.68
4. Step 4: Simplify right side
   1,219,046.88x = 1,437,037,761,847.45
5. Step 5: Solve for x
   x = 1,437,037,761,847.45/1,219,046.88
6. Step 6: Final answer
   x = 1,178,820.75