Finding the Fourth Proportional to 2,155,309.47, 2,974,757.75 and 1,238,168.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,309.47 : 2,974,757.75 = 1,238,168.25 : x
2. Step 2: Convert to fraction form
   2,155,309.47/2,974,757.75 = 1,238,168.25/x
3. Step 3: Cross multiply
   2,155,309.47x = 2,974,757.75 × 1,238,168.25
4. Step 4: Simplify right side
   2,155,309.47x = 3,683,250,591,300.60
5. Step 5: Solve for x
   x = 3,683,250,591,300.60/2,155,309.47
6. Step 6: Final answer
   x = 1,708,919.60