Finding the Fourth Proportional to 1,194.50, 1,792.76 and 647.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,194.50 : 1,792.76 = 647.15 : x
2. Step 2: Convert to fraction form
   1,194.50/1,792.76 = 647.15/x
3. Step 3: Cross multiply
   1,194.50x = 1,792.76 × 647.15
4. Step 4: Simplify right side
   1,194.50x = 1,160,172.43
5. Step 5: Solve for x
   x = 1,160,172.43/1,194.50
6. Step 6: Final answer
   x = 971.27