Finding the Fourth Proportional to 2,066.32, 3,100.20 and 768.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.32 : 3,100.20 = 768.16 : x
2. Step 2: Convert to fraction form
   2,066.32/3,100.20 = 768.16/x
3. Step 3: Cross multiply
   2,066.32x = 3,100.20 × 768.16
4. Step 4: Simplify right side
   2,066.32x = 2,381,449.63
5. Step 5: Solve for x
   x = 2,381,449.63/2,066.32
6. Step 6: Final answer
   x = 1,152.51