Finding the Fourth Proportional to 2,485.96, 3,430.67 and 1,367

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.96 : 3,430.67 = 1,367 : x
2. Step 2: Convert to fraction form
   2,485.96/3,430.67 = 1,367/x
3. Step 3: Cross multiply
   2,485.96x = 3,430.67 × 1,367
4. Step 4: Simplify right side
   2,485.96x = 4,689,725.89
5. Step 5: Solve for x
   x = 4,689,725.89/2,485.96
6. Step 6: Final answer
   x = 1,886.48