Finding the Fourth Proportional to 2,128,404, 3,192,741.36 and 865,541.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,404 : 3,192,741.36 = 865,541.28 : x
2. Step 2: Convert to fraction form
   2,128,404/3,192,741.36 = 865,541.28/x
3. Step 3: Cross multiply
   2,128,404x = 3,192,741.36 × 865,541.28
4. Step 4: Simplify right side
   2,128,404x = 2,763,449,443,443.34
5. Step 5: Solve for x
   x = 2,763,449,443,443.34/2,128,404
6. Step 6: Final answer
   x = 1,298,366.97