Finding the Fourth Proportional to 1,985.75, 2,739.98 and 1,146.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.75 : 2,739.98 = 1,146.15 : x
2. Step 2: Convert to fraction form
   1,985.75/2,739.98 = 1,146.15/x
3. Step 3: Cross multiply
   1,985.75x = 2,739.98 × 1,146.15
4. Step 4: Simplify right side
   1,985.75x = 3,140,424.50
5. Step 5: Solve for x
   x = 3,140,424.50/1,985.75
6. Step 6: Final answer
   x = 1,581.48