Finding the Fourth Proportional to 1,150,386.91, 1,590,403.71 and 863,408.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150,386.91 : 1,590,403.71 = 863,408.77 : x
2. Step 2: Convert to fraction form
   1,150,386.91/1,590,403.71 = 863,408.77/x
3. Step 3: Cross multiply
   1,150,386.91x = 1,590,403.71 × 863,408.77
4. Step 4: Simplify right side
   1,150,386.91x = 1,373,168,510,316.31
5. Step 5: Solve for x
   x = 1,373,168,510,316.31/1,150,386.91
6. Step 6: Final answer
   x = 1,193,657.98