Finding the Fourth Proportional to 1,372.75, 1,894.38 and 783.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.75 : 1,894.38 = 783.27 : x
2. Step 2: Convert to fraction form
   1,372.75/1,894.38 = 783.27/x
3. Step 3: Cross multiply
   1,372.75x = 1,894.38 × 783.27
4. Step 4: Simplify right side
   1,372.75x = 1,483,811.02
5. Step 5: Solve for x
   x = 1,483,811.02/1,372.75
6. Step 6: Final answer
   x = 1,080.90