Finding the Fourth Proportional to 1,084,851.56, 1,626,681.18 and 861,641.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084,851.56 : 1,626,681.18 = 861,641.48 : x
2. Step 2: Convert to fraction form
   1,084,851.56/1,626,681.18 = 861,641.48/x
3. Step 3: Cross multiply
   1,084,851.56x = 1,626,681.18 × 861,641.48
4. Step 4: Simplify right side
   1,084,851.56x = 1,401,615,979,423.35
5. Step 5: Solve for x
   x = 1,401,615,979,423.35/1,084,851.56
6. Step 6: Final answer
   x = 1,291,988.72