Finding the Fourth Proportional to 1,088.22, 1,501.86 and 668.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.22 : 1,501.86 = 668.58 : x
2. Step 2: Convert to fraction form
   1,088.22/1,501.86 = 668.58/x
3. Step 3: Cross multiply
   1,088.22x = 1,501.86 × 668.58
4. Step 4: Simplify right side
   1,088.22x = 1,004,113.56
5. Step 5: Solve for x
   x = 1,004,113.56/1,088.22
6. Step 6: Final answer
   x = 922.71