Finding the Fourth Proportional to 1,150,486.86, 1,590,541.47 and 863,508.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150,486.86 : 1,590,541.47 = 863,508.72 : x
2. Step 2: Convert to fraction form
   1,150,486.86/1,590,541.47 = 863,508.72/x
3. Step 3: Cross multiply
   1,150,486.86x = 1,590,541.47 × 863,508.72
4. Step 4: Simplify right side
   1,150,486.86x = 1,373,446,428,866.62
5. Step 5: Solve for x
   x = 1,373,446,428,866.62/1,150,486.86
6. Step 6: Final answer
   x = 1,193,795.84