Finding the Fourth Proportional to 1,851.24, 2,554.77 and 1,011.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.24 : 2,554.77 = 1,011.99 : x
2. Step 2: Convert to fraction form
   1,851.24/2,554.77 = 1,011.99/x
3. Step 3: Cross multiply
   1,851.24x = 2,554.77 × 1,011.99
4. Step 4: Simplify right side
   1,851.24x = 2,585,401.69
5. Step 5: Solve for x
   x = 2,585,401.69/1,851.24
6. Step 6: Final answer
   x = 1,396.58