Finding the Fourth Proportional to 2,543, 3,814.54 and 899.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543 : 3,814.54 = 899.58 : x
2. Step 2: Convert to fraction form
   2,543/3,814.54 = 899.58/x
3. Step 3: Cross multiply
   2,543x = 3,814.54 × 899.58
4. Step 4: Simplify right side
   2,543x = 3,431,483.89
5. Step 5: Solve for x
   x = 3,431,483.89/2,543
6. Step 6: Final answer
   x = 1,349.38