Finding the Fourth Proportional to 1,395.94, 1,926.57 and 872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.94 : 1,926.57 = 872.50 : x
2. Step 2: Convert to fraction form
   1,395.94/1,926.57 = 872.50/x
3. Step 3: Cross multiply
   1,395.94x = 1,926.57 × 872.50
4. Step 4: Simplify right side
   1,395.94x = 1,680,932.33
5. Step 5: Solve for x
   x = 1,680,932.33/1,395.94
6. Step 6: Final answer
   x = 1,204.16