Finding the Fourth Proportional to 1,693.02, 2,335.59 and 993.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,693.02 : 2,335.59 = 993.90 : x
2. Step 2: Convert to fraction form
   1,693.02/2,335.59 = 993.90/x
3. Step 3: Cross multiply
   1,693.02x = 2,335.59 × 993.90
4. Step 4: Simplify right side
   1,693.02x = 2,321,342.90
5. Step 5: Solve for x
   x = 2,321,342.90/1,693.02
6. Step 6: Final answer
   x = 1,371.13