Finding the Fourth Proportional to 2,100.32, 3,149.94 and 1,278.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.32 : 3,149.94 = 1,278.44 : x
2. Step 2: Convert to fraction form
   2,100.32/3,149.94 = 1,278.44/x
3. Step 3: Cross multiply
   2,100.32x = 3,149.94 × 1,278.44
4. Step 4: Simplify right side
   2,100.32x = 4,027,009.29
5. Step 5: Solve for x
   x = 4,027,009.29/2,100.32
6. Step 6: Final answer
   x = 1,917.33