Finding the Fourth Proportional to 2,543.48, 3,815.48 and 899.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.48 : 3,815.48 = 899.96 : x
2. Step 2: Convert to fraction form
   2,543.48/3,815.48 = 899.96/x
3. Step 3: Cross multiply
   2,543.48x = 3,815.48 × 899.96
4. Step 4: Simplify right side
   2,543.48x = 3,433,779.38
5. Step 5: Solve for x
   x = 3,433,779.38/2,543.48
6. Step 6: Final answer
   x = 1,350.03