Finding the Fourth Proportional to 1,373.72, 1,895.64 and 784.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.72 : 1,895.64 = 784.28 : x
2. Step 2: Convert to fraction form
   1,373.72/1,895.64 = 784.28/x
3. Step 3: Cross multiply
   1,373.72x = 1,895.64 × 784.28
4. Step 4: Simplify right side
   1,373.72x = 1,486,712.54
5. Step 5: Solve for x
   x = 1,486,712.54/1,373.72
6. Step 6: Final answer
   x = 1,082.25