Finding the Fourth Proportional to 2,130.70, 3,196.58 and 1,693.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.70 : 3,196.58 = 1,693.60 : x
2. Step 2: Convert to fraction form
   2,130.70/3,196.58 = 1,693.60/x
3. Step 3: Cross multiply
   2,130.70x = 3,196.58 × 1,693.60
4. Step 4: Simplify right side
   2,130.70x = 5,413,727.89
5. Step 5: Solve for x
   x = 5,413,727.89/2,130.70
6. Step 6: Final answer
   x = 2,540.82