Finding the Fourth Proportional to 1,393.00, 2,086.16 and 843.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.00 : 2,086.16 = 843.82 : x
2. Step 2: Convert to fraction form
   1,393.00/2,086.16 = 843.82/x
3. Step 3: Cross multiply
   1,393.00x = 2,086.16 × 843.82
4. Step 4: Simplify right side
   1,393.00x = 1,760,334.10
5. Step 5: Solve for x
   x = 1,760,334.10/1,393.00
6. Step 6: Final answer
   x = 1,263.70