Finding the Fourth Proportional to 1,373.13, 1,894.94 and 783.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.13 : 1,894.94 = 783.99 : x
2. Step 2: Convert to fraction form
   1,373.13/1,894.94 = 783.99/x
3. Step 3: Cross multiply
   1,373.13x = 1,894.94 × 783.99
4. Step 4: Simplify right side
   1,373.13x = 1,485,614.01
5. Step 5: Solve for x
   x = 1,485,614.01/1,373.13
6. Step 6: Final answer
   x = 1,081.92