Finding the Fourth Proportional to 1,393.76, 1,922.46 and 1,300

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.76 : 1,922.46 = 1,300 : x
2. Step 2: Convert to fraction form
   1,393.76/1,922.46 = 1,300/x
3. Step 3: Cross multiply
   1,393.76x = 1,922.46 × 1,300
4. Step 4: Simplify right side
   1,393.76x = 2,499,198
5. Step 5: Solve for x
   x = 2,499,198/1,393.76
6. Step 6: Final answer
   x = 1,793.13