Finding the Fourth Proportional to 2,003.40, 2,764.74 and 1,107.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.40 : 2,764.74 = 1,107.15 : x
2. Step 2: Convert to fraction form
   2,003.40/2,764.74 = 1,107.15/x
3. Step 3: Cross multiply
   2,003.40x = 2,764.74 × 1,107.15
4. Step 4: Simplify right side
   2,003.40x = 3,060,981.89
5. Step 5: Solve for x
   x = 3,060,981.89/2,003.40
6. Step 6: Final answer
   x = 1,527.89