Finding the Fourth Proportional to 2,165,389.63, 2,988,984.71 and 1,247,985.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165,389.63 : 2,988,984.71 = 1,247,985.25 : x
2. Step 2: Convert to fraction form
   2,165,389.63/2,988,984.71 = 1,247,985.25/x
3. Step 3: Cross multiply
   2,165,389.63x = 2,988,984.71 × 1,247,985.25
4. Step 4: Simplify right side
   2,165,389.63x = 3,730,208,826,203.03
5. Step 5: Solve for x
   x = 3,730,208,826,203.03/2,165,389.63
6. Step 6: Final answer
   x = 1,722,650.18