Finding the Fourth Proportional to 1,088.33, 1,501.58 and 668.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.33 : 1,501.58 = 668.58 : x
2. Step 2: Convert to fraction form
   1,088.33/1,501.58 = 668.58/x
3. Step 3: Cross multiply
   1,088.33x = 1,501.58 × 668.58
4. Step 4: Simplify right side
   1,088.33x = 1,003,923.01
5. Step 5: Solve for x
   x = 1,003,923.01/1,088.33
6. Step 6: Final answer
   x = 922.45