Finding the Fourth Proportional to 1,191.27, 1,789.65 and 1,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.27 : 1,789.65 = 1,142.06 : x
2. Step 2: Convert to fraction form
   1,191.27/1,789.65 = 1,142.06/x
3. Step 3: Cross multiply
   1,191.27x = 1,789.65 × 1,142.06
4. Step 4: Simplify right side
   1,191.27x = 2,043,892.15
5. Step 5: Solve for x
   x = 2,043,892.15/1,191.27
6. Step 6: Final answer
   x = 1,715.73