Finding the Fourth Proportional to 2,143,990.82, 3,214,012.47 and 928,803.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,990.82 : 3,214,012.47 = 928,803.86 : x
2. Step 2: Convert to fraction form
   2,143,990.82/3,214,012.47 = 928,803.86/x
3. Step 3: Cross multiply
   2,143,990.82x = 3,214,012.47 × 928,803.86
4. Step 4: Simplify right side
   2,143,990.82x = 2,985,187,198,802.42
5. Step 5: Solve for x
   x = 2,985,187,198,802.42/2,143,990.82
6. Step 6: Final answer
   x = 1,392,350.74