Finding the Fourth Proportional to 1,173.43, 1,755.28 and 1,066.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.43 : 1,755.28 = 1,066.51 : x
2. Step 2: Convert to fraction form
   1,173.43/1,755.28 = 1,066.51/x
3. Step 3: Cross multiply
   1,173.43x = 1,755.28 × 1,066.51
4. Step 4: Simplify right side
   1,173.43x = 1,872,009.56
5. Step 5: Solve for x
   x = 1,872,009.56/1,173.43
6. Step 6: Final answer
   x = 1,595.34