Finding the Fourth Proportional to 2,158,496.64, 3,237,885 and 719,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,496.64 : 3,237,885 = 719,118.72 : x
2. Step 2: Convert to fraction form
   2,158,496.64/3,237,885 = 719,118.72/x
3. Step 3: Cross multiply
   2,158,496.64x = 3,237,885 × 719,118.72
4. Step 4: Simplify right side
   2,158,496.64x = 2,328,423,716,707.20
5. Step 5: Solve for x
   x = 2,328,423,716,707.20/2,158,496.64
6. Step 6: Final answer
   x = 1,078,724.74