Finding the Fourth Proportional to 2,678.28, 3,696.06 and 1,543.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.28 : 3,696.06 = 1,543.69 : x
2. Step 2: Convert to fraction form
   2,678.28/3,696.06 = 1,543.69/x
3. Step 3: Cross multiply
   2,678.28x = 3,696.06 × 1,543.69
4. Step 4: Simplify right side
   2,678.28x = 5,705,561.62
5. Step 5: Solve for x
   x = 5,705,561.62/2,678.28
6. Step 6: Final answer
   x = 2,130.31