Finding the Fourth Proportional to 2,120.32, 2,926.35 and 1,281.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.32 : 2,926.35 = 1,281.15 : x
2. Step 2: Convert to fraction form
   2,120.32/2,926.35 = 1,281.15/x
3. Step 3: Cross multiply
   2,120.32x = 2,926.35 × 1,281.15
4. Step 4: Simplify right side
   2,120.32x = 3,749,084.08
5. Step 5: Solve for x
   x = 3,749,084.08/2,120.32
6. Step 6: Final answer
   x = 1,768.17