Finding the Fourth Proportional to 1,874.88, 2,803.92 and 1,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,874.88 : 2,803.92 = 1,406.72 : x
2. Step 2: Convert to fraction form
   1,874.88/2,803.92 = 1,406.72/x
3. Step 3: Cross multiply
   1,874.88x = 2,803.92 × 1,406.72
4. Step 4: Simplify right side
   1,874.88x = 3,944,330.34
5. Step 5: Solve for x
   x = 3,944,330.34/1,874.88
6. Step 6: Final answer
   x = 2,103.78