Finding the Fourth Proportional to 1,347.15, 1,859.54 and 993.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.15 : 1,859.54 = 993.48 : x
2. Step 2: Convert to fraction form
   1,347.15/1,859.54 = 993.48/x
3. Step 3: Cross multiply
   1,347.15x = 1,859.54 × 993.48
4. Step 4: Simplify right side
   1,347.15x = 1,847,410.83
5. Step 5: Solve for x
   x = 1,847,410.83/1,347.15
6. Step 6: Final answer
   x = 1,371.35