Finding the Fourth Proportional to 1,109.52, 1,670.33 and 958.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.52 : 1,670.33 = 958.86 : x
2. Step 2: Convert to fraction form
   1,109.52/1,670.33 = 958.86/x
3. Step 3: Cross multiply
   1,109.52x = 1,670.33 × 958.86
4. Step 4: Simplify right side
   1,109.52x = 1,601,607.83
5. Step 5: Solve for x
   x = 1,601,607.83/1,109.52
6. Step 6: Final answer
   x = 1,443.51