Finding the Fourth Proportional to 1,373.45, 1,895.31 and 783.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.45 : 1,895.31 = 783.95 : x
2. Step 2: Convert to fraction form
   1,373.45/1,895.31 = 783.95/x
3. Step 3: Cross multiply
   1,373.45x = 1,895.31 × 783.95
4. Step 4: Simplify right side
   1,373.45x = 1,485,818.80
5. Step 5: Solve for x
   x = 1,485,818.80/1,373.45
6. Step 6: Final answer
   x = 1,081.82