Finding the Fourth Proportional to 1,051.78, 1,448.17 and 894.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.78 : 1,448.17 = 894.10 : x
2. Step 2: Convert to fraction form
   1,051.78/1,448.17 = 894.10/x
3. Step 3: Cross multiply
   1,051.78x = 1,448.17 × 894.10
4. Step 4: Simplify right side
   1,051.78x = 1,294,808.80
5. Step 5: Solve for x
   x = 1,294,808.80/1,051.78
6. Step 6: Final answer
   x = 1,231.06