Finding the Fourth Proportional to 1,531.53, 2,112.89 and 1,066.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.53 : 2,112.89 = 1,066.05 : x
2. Step 2: Convert to fraction form
   1,531.53/2,112.89 = 1,066.05/x
3. Step 3: Cross multiply
   1,531.53x = 2,112.89 × 1,066.05
4. Step 4: Simplify right side
   1,531.53x = 2,252,441.05
5. Step 5: Solve for x
   x = 2,252,441.05/1,531.53
6. Step 6: Final answer
   x = 1,470.71