Finding the Fourth Proportional to 1,088.42, 1,631.33 and 626.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.42 : 1,631.33 = 626.41 : x
2. Step 2: Convert to fraction form
   1,088.42/1,631.33 = 626.41/x
3. Step 3: Cross multiply
   1,088.42x = 1,631.33 × 626.41
4. Step 4: Simplify right side
   1,088.42x = 1,021,870.14
5. Step 5: Solve for x
   x = 1,021,870.14/1,088.42
6. Step 6: Final answer
   x = 938.86