Finding the Fourth Proportional to 1,093,328.88, 1,508,328.72 and 685,152.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093,328.88 : 1,508,328.72 = 685,152.96 : x
2. Step 2: Convert to fraction form
   1,093,328.88/1,508,328.72 = 685,152.96/x
3. Step 3: Cross multiply
   1,093,328.88x = 1,508,328.72 × 685,152.96
4. Step 4: Simplify right side
   1,093,328.88x = 1,033,435,887,161.01
5. Step 5: Solve for x
   x = 1,033,435,887,161.01/1,093,328.88
6. Step 6: Final answer
   x = 945,219.60