Finding the Fourth Proportional to 1,568.72, 2,159.88 and 1,381.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.72 : 2,159.88 = 1,381.52 : x
2. Step 2: Convert to fraction form
   1,568.72/2,159.88 = 1,381.52/x
3. Step 3: Cross multiply
   1,568.72x = 2,159.88 × 1,381.52
4. Step 4: Simplify right side
   1,568.72x = 2,983,917.42
5. Step 5: Solve for x
   x = 2,983,917.42/1,568.72
6. Step 6: Final answer
   x = 1,902.14