Finding the Fourth Proportional to 1,168.23, 1,612.10 and 670.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.23 : 1,612.10 = 670.89 : x
2. Step 2: Convert to fraction form
   1,168.23/1,612.10 = 670.89/x
3. Step 3: Cross multiply
   1,168.23x = 1,612.10 × 670.89
4. Step 4: Simplify right side
   1,168.23x = 1,081,538.41
5. Step 5: Solve for x
   x = 1,081,538.41/1,168.23
6. Step 6: Final answer
   x = 925.79