Finding the Fourth Proportional to 866,638.98, 1,195,957.71 and 484,667.28

Step by Step Solution

1. Step 1: Write the proportion equation
   866,638.98 : 1,195,957.71 = 484,667.28 : x
2. Step 2: Convert to fraction form
   866,638.98/1,195,957.71 = 484,667.28/x
3. Step 3: Cross multiply
   866,638.98x = 1,195,957.71 × 484,667.28
4. Step 4: Simplify right side
   866,638.98x = 579,641,570,300.73
5. Step 5: Solve for x
   x = 579,641,570,300.73/866,638.98
6. Step 6: Final answer
   x = 668,838.56