Finding the Fourth Proportional to 1,088.93, 1,630.59 and 722.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.93 : 1,630.59 = 722.57 : x
2. Step 2: Convert to fraction form
   1,088.93/1,630.59 = 722.57/x
3. Step 3: Cross multiply
   1,088.93x = 1,630.59 × 722.57
4. Step 4: Simplify right side
   1,088.93x = 1,178,215.42
5. Step 5: Solve for x
   x = 1,178,215.42/1,088.93
6. Step 6: Final answer
   x = 1,081.99