Finding the Fourth Proportional to 1,311,688.01, 1,810,258.59 and 767,790.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311,688.01 : 1,810,258.59 = 767,790.83 : x
2. Step 2: Convert to fraction form
   1,311,688.01/1,810,258.59 = 767,790.83/x
3. Step 3: Cross multiply
   1,311,688.01x = 1,810,258.59 × 767,790.83
4. Step 4: Simplify right side
   1,311,688.01x = 1,389,899,945,330.73
5. Step 5: Solve for x
   x = 1,389,899,945,330.73/1,311,688.01
6. Step 6: Final answer
   x = 1,059,626.93