Finding the Fourth Proportional to 879,008.59, 1,325,101.15 and 820,418.35

Step by Step Solution

1. Step 1: Write the proportion equation
   879,008.59 : 1,325,101.15 = 820,418.35 : x
2. Step 2: Convert to fraction form
   879,008.59/1,325,101.15 = 820,418.35/x
3. Step 3: Cross multiply
   879,008.59x = 1,325,101.15 × 820,418.35
4. Step 4: Simplify right side
   879,008.59x = 1,087,137,299,066.10
5. Step 5: Solve for x
   x = 1,087,137,299,066.10/879,008.59
6. Step 6: Final answer
   x = 1,236,776.65