Finding the Fourth Proportional to 2,003.10, 2,999.18 and 1,693.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.10 : 2,999.18 = 1,693.28 : x
2. Step 2: Convert to fraction form
   2,003.10/2,999.18 = 1,693.28/x
3. Step 3: Cross multiply
   2,003.10x = 2,999.18 × 1,693.28
4. Step 4: Simplify right side
   2,003.10x = 5,078,451.51
5. Step 5: Solve for x
   x = 5,078,451.51/2,003.10
6. Step 6: Final answer
   x = 2,535.30