Finding the Fourth Proportional to 1,985.31, 2,739.69 and 1,146.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.31 : 2,739.69 = 1,146.02 : x
2. Step 2: Convert to fraction form
   1,985.31/2,739.69 = 1,146.02/x
3. Step 3: Cross multiply
   1,985.31x = 2,739.69 × 1,146.02
4. Step 4: Simplify right side
   1,985.31x = 3,139,725.84
5. Step 5: Solve for x
   x = 3,139,725.84/1,985.31
6. Step 6: Final answer
   x = 1,581.48