Finding the Fourth Proportional to 2,658.69, 3,980.34 and 2,003.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.69 : 3,980.34 = 2,003.35 : x
2. Step 2: Convert to fraction form
   2,658.69/3,980.34 = 2,003.35/x
3. Step 3: Cross multiply
   2,658.69x = 3,980.34 × 2,003.35
4. Step 4: Simplify right side
   2,658.69x = 7,973,994.86
5. Step 5: Solve for x
   x = 7,973,994.86/2,658.69
6. Step 6: Final answer
   x = 2,999.22