Finding the Fourth Proportional to 1,395.46, 1,925.85 and 872.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.46 : 1,925.85 = 872.02 : x
2. Step 2: Convert to fraction form
   1,395.46/1,925.85 = 872.02/x
3. Step 3: Cross multiply
   1,395.46x = 1,925.85 × 872.02
4. Step 4: Simplify right side
   1,395.46x = 1,679,379.72
5. Step 5: Solve for x
   x = 1,679,379.72/1,395.46
6. Step 6: Final answer
   x = 1,203.46