Finding the Fourth Proportional to 2,080.31, 2,870.88 and 1,136.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.31 : 2,870.88 = 1,136.16 : x
2. Step 2: Convert to fraction form
   2,080.31/2,870.88 = 1,136.16/x
3. Step 3: Cross multiply
   2,080.31x = 2,870.88 × 1,136.16
4. Step 4: Simplify right side
   2,080.31x = 3,261,779.02
5. Step 5: Solve for x
   x = 3,261,779.02/2,080.31
6. Step 6: Final answer
   x = 1,567.93