Finding the Fourth Proportional to 1,151.88, 1,719.47 and 1,066.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.88 : 1,719.47 = 1,066.23 : x
2. Step 2: Convert to fraction form
   1,151.88/1,719.47 = 1,066.23/x
3. Step 3: Cross multiply
   1,151.88x = 1,719.47 × 1,066.23
4. Step 4: Simplify right side
   1,151.88x = 1,833,345.17
5. Step 5: Solve for x
   x = 1,833,345.17/1,151.88
6. Step 6: Final answer
   x = 1,591.61