Finding the Fourth Proportional to 2,672.99, 3,688.59 and 1,553.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.99 : 3,688.59 = 1,553.75 : x
2. Step 2: Convert to fraction form
   2,672.99/3,688.59 = 1,553.75/x
3. Step 3: Cross multiply
   2,672.99x = 3,688.59 × 1,553.75
4. Step 4: Simplify right side
   2,672.99x = 5,731,139.19
5. Step 5: Solve for x
   x = 5,731,139.19/2,672.99
6. Step 6: Final answer
   x = 2,144.09