Finding the Fourth Proportional to 1,985.31, 2,739.87 and 1,146.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.31 : 2,739.87 = 1,146.06 : x
2. Step 2: Convert to fraction form
   1,985.31/2,739.87 = 1,146.06/x
3. Step 3: Cross multiply
   1,985.31x = 2,739.87 × 1,146.06
4. Step 4: Simplify right side
   1,985.31x = 3,140,055.41
5. Step 5: Solve for x
   x = 3,140,055.41/1,985.31
6. Step 6: Final answer
   x = 1,581.64