Finding the Fourth Proportional to 2,553.85, 3,523.69 and 1,558.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.85 : 3,523.69 = 1,558.76 : x
2. Step 2: Convert to fraction form
   2,553.85/3,523.69 = 1,558.76/x
3. Step 3: Cross multiply
   2,553.85x = 3,523.69 × 1,558.76
4. Step 4: Simplify right side
   2,553.85x = 5,492,591.94
5. Step 5: Solve for x
   x = 5,492,591.94/2,553.85
6. Step 6: Final answer
   x = 2,150.71