Finding the Fourth Proportional to 1,851.99, 2,555.81 and 1,012.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.99 : 2,555.81 = 1,012.77 : x
2. Step 2: Convert to fraction form
   1,851.99/2,555.81 = 1,012.77/x
3. Step 3: Cross multiply
   1,851.99x = 2,555.81 × 1,012.77
4. Step 4: Simplify right side
   1,851.99x = 2,588,447.69
5. Step 5: Solve for x
   x = 2,588,447.69/1,851.99
6. Step 6: Final answer
   x = 1,397.66