Finding the Fourth Proportional to 915,870.08, 1,262,440.89 and 721,961.82

Step by Step Solution

1. Step 1: Write the proportion equation
   915,870.08 : 1,262,440.89 = 721,961.82 : x
2. Step 2: Convert to fraction form
   915,870.08/1,262,440.89 = 721,961.82/x
3. Step 3: Cross multiply
   915,870.08x = 1,262,440.89 × 721,961.82
4. Step 4: Simplify right side
   915,870.08x = 911,434,122,586.82
5. Step 5: Solve for x
   x = 911,434,122,586.82/915,870.08
6. Step 6: Final answer
   x = 995,156.56