Finding the Fourth Proportional to 1,356.56, 1,872.60 and 1,025.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.56 : 1,872.60 = 1,025.06 : x
2. Step 2: Convert to fraction form
   1,356.56/1,872.60 = 1,025.06/x
3. Step 3: Cross multiply
   1,356.56x = 1,872.60 × 1,025.06
4. Step 4: Simplify right side
   1,356.56x = 1,919,527.36
5. Step 5: Solve for x
   x = 1,919,527.36/1,356.56
6. Step 6: Final answer
   x = 1,415.00