Finding the Fourth Proportional to 1,951.47, 2,692.80 and 1,143.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,951.47 : 2,692.80 = 1,143.99 : x
2. Step 2: Convert to fraction form
   1,951.47/2,692.80 = 1,143.99/x
3. Step 3: Cross multiply
   1,951.47x = 2,692.80 × 1,143.99
4. Step 4: Simplify right side
   1,951.47x = 3,080,536.27
5. Step 5: Solve for x
   x = 3,080,536.27/1,951.47
6. Step 6: Final answer
   x = 1,578.57