Finding the Fourth Proportional to 1,563.47, 2,158.34 and 1,066.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.47 : 2,158.34 = 1,066.94 : x
2. Step 2: Convert to fraction form
   1,563.47/2,158.34 = 1,066.94/x
3. Step 3: Cross multiply
   1,563.47x = 2,158.34 × 1,066.94
4. Step 4: Simplify right side
   1,563.47x = 2,302,819.28
5. Step 5: Solve for x
   x = 2,302,819.28/1,563.47
6. Step 6: Final answer
   x = 1,472.89