Finding the Fourth Proportional to 1,116,478.83, 1,541,141.60 and 663,768.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116,478.83 : 1,541,141.60 = 663,768.75 : x
2. Step 2: Convert to fraction form
   1,116,478.83/1,541,141.60 = 663,768.75/x
3. Step 3: Cross multiply
   1,116,478.83x = 1,541,141.60 × 663,768.75
4. Step 4: Simplify right side
   1,116,478.83x = 1,022,961,630,086.16
5. Step 5: Solve for x
   x = 1,022,961,630,086.16/1,116,478.83
6. Step 6: Final answer
   x = 916,239.16