Finding the Fourth Proportional to 1,373.25, 1,895.57 and 821.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.25 : 1,895.57 = 821.25 : x
2. Step 2: Convert to fraction form
   1,373.25/1,895.57 = 821.25/x
3. Step 3: Cross multiply
   1,373.25x = 1,895.57 × 821.25
4. Step 4: Simplify right side
   1,373.25x = 1,556,736.86
5. Step 5: Solve for x
   x = 1,556,736.86/1,373.25
6. Step 6: Final answer
   x = 1,133.62