Finding the Fourth Proportional to 2,147.78, 3,223.76 and 1,037.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.78 : 3,223.76 = 1,037.99 : x
2. Step 2: Convert to fraction form
   2,147.78/3,223.76 = 1,037.99/x
3. Step 3: Cross multiply
   2,147.78x = 3,223.76 × 1,037.99
4. Step 4: Simplify right side
   2,147.78x = 3,346,209.33
5. Step 5: Solve for x
   x = 3,346,209.33/2,147.78
6. Step 6: Final answer
   x = 1,557.98