Finding the Fourth Proportional to 2,748.18, 4,120.32 and 992.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.18 : 4,120.32 = 992.34 : x
2. Step 2: Convert to fraction form
   2,748.18/4,120.32 = 992.34/x
3. Step 3: Cross multiply
   2,748.18x = 4,120.32 × 992.34
4. Step 4: Simplify right side
   2,748.18x = 4,088,758.35
5. Step 5: Solve for x
   x = 4,088,758.35/2,748.18
6. Step 6: Final answer
   x = 1,487.81