Finding the Fourth Proportional to 2,057,690.23, 2,839,612.10 and 1,139,978.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057,690.23 : 2,839,612.10 = 1,139,978.99 : x
2. Step 2: Convert to fraction form
   2,057,690.23/2,839,612.10 = 1,139,978.99/x
3. Step 3: Cross multiply
   2,057,690.23x = 2,839,612.10 × 1,139,978.99
4. Step 4: Simplify right side
   2,057,690.23x = 3,237,098,135,148.91
5. Step 5: Solve for x
   x = 3,237,098,135,148.91/2,057,690.23
6. Step 6: Final answer
   x = 1,573,170.78