Finding the Fourth Proportional to 2,530.89, 3,791.48 and 1,431.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.89 : 3,791.48 = 1,431.99 : x
2. Step 2: Convert to fraction form
   2,530.89/3,791.48 = 1,431.99/x
3. Step 3: Cross multiply
   2,530.89x = 3,791.48 × 1,431.99
4. Step 4: Simplify right side
   2,530.89x = 5,429,354.29
5. Step 5: Solve for x
   x = 5,429,354.29/2,530.89
6. Step 6: Final answer
   x = 2,145.24