Finding the Fourth Proportional to 1,167.47, 1,612.88 and 872.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.47 : 1,612.88 = 872.22 : x
2. Step 2: Convert to fraction form
   1,167.47/1,612.88 = 872.22/x
3. Step 3: Cross multiply
   1,167.47x = 1,612.88 × 872.22
4. Step 4: Simplify right side
   1,167.47x = 1,406,781.83
5. Step 5: Solve for x
   x = 1,406,781.83/1,167.47
6. Step 6: Final answer
   x = 1,204.99