Finding the Fourth Proportional to 2,188.56, 3,285.04 and 1,572.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.56 : 3,285.04 = 1,572.96 : x
2. Step 2: Convert to fraction form
   2,188.56/3,285.04 = 1,572.96/x
3. Step 3: Cross multiply
   2,188.56x = 3,285.04 × 1,572.96
4. Step 4: Simplify right side
   2,188.56x = 5,167,236.52
5. Step 5: Solve for x
   x = 5,167,236.52/2,188.56
6. Step 6: Final answer
   x = 2,361.02