Finding the Fourth Proportional to 1,155,843.49, 1,595,233.23 and 665,718.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,843.49 : 1,595,233.23 = 665,718.80 : x
2. Step 2: Convert to fraction form
   1,155,843.49/1,595,233.23 = 665,718.80/x
3. Step 3: Cross multiply
   1,155,843.49x = 1,595,233.23 × 665,718.80
4. Step 4: Simplify right side
   1,155,843.49x = 1,061,976,751,595.72
5. Step 5: Solve for x
   x = 1,061,976,751,595.72/1,155,843.49
6. Step 6: Final answer
   x = 918,789.40