Finding the Fourth Proportional to 1,373.16, 1,895.12 and 783.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.16 : 1,895.12 = 783.75 : x
2. Step 2: Convert to fraction form
   1,373.16/1,895.12 = 783.75/x
3. Step 3: Cross multiply
   1,373.16x = 1,895.12 × 783.75
4. Step 4: Simplify right side
   1,373.16x = 1,485,300.30
5. Step 5: Solve for x
   x = 1,485,300.30/1,373.16
6. Step 6: Final answer
   x = 1,081.67