Finding the Fourth Proportional to 1,184.38, 1,772.32 and 722.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.38 : 1,772.32 = 722.28 : x
2. Step 2: Convert to fraction form
   1,184.38/1,772.32 = 722.28/x
3. Step 3: Cross multiply
   1,184.38x = 1,772.32 × 722.28
4. Step 4: Simplify right side
   1,184.38x = 1,280,111.29
5. Step 5: Solve for x
   x = 1,280,111.29/1,184.38
6. Step 6: Final answer
   x = 1,080.83