Finding the Fourth Proportional to 2,079.81, 2,870.14 and 1,148.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.81 : 2,870.14 = 1,148.31 : x
2. Step 2: Convert to fraction form
   2,079.81/2,870.14 = 1,148.31/x
3. Step 3: Cross multiply
   2,079.81x = 2,870.14 × 1,148.31
4. Step 4: Simplify right side
   2,079.81x = 3,295,810.46
5. Step 5: Solve for x
   x = 3,295,810.46/2,079.81
6. Step 6: Final answer
   x = 1,584.67