Finding the Fourth Proportional to 2,802.51, 3,867.46 and 1,543.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,802.51 : 3,867.46 = 1,543.61 : x
2. Step 2: Convert to fraction form
   2,802.51/3,867.46 = 1,543.61/x
3. Step 3: Cross multiply
   2,802.51x = 3,867.46 × 1,543.61
4. Step 4: Simplify right side
   2,802.51x = 5,969,855.74
5. Step 5: Solve for x
   x = 5,969,855.74/2,802.51
6. Step 6: Final answer
   x = 2,130.18