Finding the Fourth Proportional to 2,077.15, 2,866.21 and 1,145.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.15 : 2,866.21 = 1,145.59 : x
2. Step 2: Convert to fraction form
   2,077.15/2,866.21 = 1,145.59/x
3. Step 3: Cross multiply
   2,077.15x = 2,866.21 × 1,145.59
4. Step 4: Simplify right side
   2,077.15x = 3,283,501.51
5. Step 5: Solve for x
   x = 3,283,501.51/2,077.15
6. Step 6: Final answer
   x = 1,580.77