Finding the Fourth Proportional to 1,155,381.68, 1,594,575.24 and 646,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,381.68 : 1,594,575.24 = 646,112.72 : x
2. Step 2: Convert to fraction form
   1,155,381.68/1,594,575.24 = 646,112.72/x
3. Step 3: Cross multiply
   1,155,381.68x = 1,594,575.24 × 646,112.72
4. Step 4: Simplify right side
   1,155,381.68x = 1,030,275,345,561.05
5. Step 5: Solve for x
   x = 1,030,275,345,561.05/1,155,381.68
6. Step 6: Final answer
   x = 891,718.61