Finding the Fourth Proportional to 1,140,578.72, 1,573,746.72 and 681,624.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,578.72 : 1,573,746.72 = 681,624.44 : x
2. Step 2: Convert to fraction form
   1,140,578.72/1,573,746.72 = 681,624.44/x
3. Step 3: Cross multiply
   1,140,578.72x = 1,573,746.72 × 681,624.44
4. Step 4: Simplify right side
   1,140,578.72x = 1,072,704,226,721.84
5. Step 5: Solve for x
   x = 1,072,704,226,721.84/1,140,578.72
6. Step 6: Final answer
   x = 940,491.18