Finding the Fourth Proportional to 1,167.48, 1,610.91 and 670.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.48 : 1,610.91 = 670.05 : x
2. Step 2: Convert to fraction form
   1,167.48/1,610.91 = 670.05/x
3. Step 3: Cross multiply
   1,167.48x = 1,610.91 × 670.05
4. Step 4: Simplify right side
   1,167.48x = 1,079,390.25
5. Step 5: Solve for x
   x = 1,079,390.25/1,167.48
6. Step 6: Final answer
   x = 924.55