Finding the Fourth Proportional to 2,810,428.58, 4,216,045.01 and 865,321.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810,428.58 : 4,216,045.01 = 865,321.73 : x
2. Step 2: Convert to fraction form
   2,810,428.58/4,216,045.01 = 865,321.73/x
3. Step 3: Cross multiply
   2,810,428.58x = 4,216,045.01 × 865,321.73
4. Step 4: Simplify right side
   2,810,428.58x = 3,648,235,373,432.83
5. Step 5: Solve for x
   x = 3,648,235,373,432.83/2,810,428.58
6. Step 6: Final answer
   x = 1,298,106.42