Finding the Fourth Proportional to 2,138,700.48, 3,208,050.72 and 718,756.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,700.48 : 3,208,050.72 = 718,756.56 : x
2. Step 2: Convert to fraction form
   2,138,700.48/3,208,050.72 = 718,756.56/x
3. Step 3: Cross multiply
   2,138,700.48x = 3,208,050.72 × 718,756.56
4. Step 4: Simplify right side
   2,138,700.48x = 2,305,807,499,812.72
5. Step 5: Solve for x
   x = 2,305,807,499,812.72/2,138,700.48
6. Step 6: Final answer
   x = 1,078,134.84