Finding the Fourth Proportional to 2,546.86, 3,514.84 and 1,428

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.86 : 3,514.84 = 1,428 : x
2. Step 2: Convert to fraction form
   2,546.86/3,514.84 = 1,428/x
3. Step 3: Cross multiply
   2,546.86x = 3,514.84 × 1,428
4. Step 4: Simplify right side
   2,546.86x = 5,019,191.52
5. Step 5: Solve for x
   x = 5,019,191.52/2,546.86
6. Step 6: Final answer
   x = 1,970.74