Finding the Fourth Proportional to 1,562.88, 2,157.12 and 1,066.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.88 : 2,157.12 = 1,066.70 : x
2. Step 2: Convert to fraction form
   1,562.88/2,157.12 = 1,066.70/x
3. Step 3: Cross multiply
   1,562.88x = 2,157.12 × 1,066.70
4. Step 4: Simplify right side
   1,562.88x = 2,300,999.90
5. Step 5: Solve for x
   x = 2,300,999.90/1,562.88
6. Step 6: Final answer
   x = 1,472.28