Finding the Fourth Proportional to 2,602.72, 3,591.82 and 1,555.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.72 : 3,591.82 = 1,555.38 : x
2. Step 2: Convert to fraction form
   2,602.72/3,591.82 = 1,555.38/x
3. Step 3: Cross multiply
   2,602.72x = 3,591.82 × 1,555.38
4. Step 4: Simplify right side
   2,602.72x = 5,586,644.99
5. Step 5: Solve for x
   x = 5,586,644.99/2,602.72
6. Step 6: Final answer
   x = 2,146.46