Finding the Fourth Proportional to 1,111.94, 1,668.77 and 1,054.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.94 : 1,668.77 = 1,054.84 : x
2. Step 2: Convert to fraction form
   1,111.94/1,668.77 = 1,054.84/x
3. Step 3: Cross multiply
   1,111.94x = 1,668.77 × 1,054.84
4. Step 4: Simplify right side
   1,111.94x = 1,760,271.73
5. Step 5: Solve for x
   x = 1,760,271.73/1,111.94
6. Step 6: Final answer
   x = 1,583.06