Finding the Fourth Proportional to 1,260,581.56, 1,739,613.62 and 687,624.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,260,581.56 : 1,739,613.62 = 687,624.28 : x
2. Step 2: Convert to fraction form
   1,260,581.56/1,739,613.62 = 687,624.28/x
3. Step 3: Cross multiply
   1,260,581.56x = 1,739,613.62 × 687,624.28
4. Step 4: Simplify right side
   1,260,581.56x = 1,196,200,562,930.69
5. Step 5: Solve for x
   x = 1,196,200,562,930.69/1,260,581.56
6. Step 6: Final answer
   x = 948,927.54