Finding the Fourth Proportional to 2,592.72, 3,890.69 and 1,053.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,592.72 : 3,890.69 = 1,053.72 : x
2. Step 2: Convert to fraction form
   2,592.72/3,890.69 = 1,053.72/x
3. Step 3: Cross multiply
   2,592.72x = 3,890.69 × 1,053.72
4. Step 4: Simplify right side
   2,592.72x = 4,099,697.87
5. Step 5: Solve for x
   x = 4,099,697.87/2,592.72
6. Step 6: Final answer
   x = 1,581.23