Finding the Fourth Proportional to 911,137.99, 1,368,111.57 and 770,826.96

Step by Step Solution

1. Step 1: Write the proportion equation
   911,137.99 : 1,368,111.57 = 770,826.96 : x
2. Step 2: Convert to fraction form
   911,137.99/1,368,111.57 = 770,826.96/x
3. Step 3: Cross multiply
   911,137.99x = 1,368,111.57 × 770,826.96
4. Step 4: Simplify right side
   911,137.99x = 1,054,577,282,443.93
5. Step 5: Solve for x
   x = 1,054,577,282,443.93/911,137.99
6. Step 6: Final answer
   x = 1,157,428.73