Finding the Fourth Proportional to 1,373.55, 1,895.33 and 783.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.55 : 1,895.33 = 783.98 : x
2. Step 2: Convert to fraction form
   1,373.55/1,895.33 = 783.98/x
3. Step 3: Cross multiply
   1,373.55x = 1,895.33 × 783.98
4. Step 4: Simplify right side
   1,373.55x = 1,485,887.42
5. Step 5: Solve for x
   x = 1,485,887.42/1,373.55
6. Step 6: Final answer
   x = 1,081.79