Finding the Fourth Proportional to 2,140,969.47, 2,954,265.67 and 1,223,258.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,969.47 : 2,954,265.67 = 1,223,258.05 : x
2. Step 2: Convert to fraction form
   2,140,969.47/2,954,265.67 = 1,223,258.05/x
3. Step 3: Cross multiply
   2,140,969.47x = 2,954,265.67 × 1,223,258.05
4. Step 4: Simplify right side
   2,140,969.47x = 3,613,829,261,007.22
5. Step 5: Solve for x
   x = 3,613,829,261,007.22/2,140,969.47
6. Step 6: Final answer
   x = 1,687,940.58