Finding the Fourth Proportional to 3,884.51, 5,827.55 and 1,111.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,884.51 : 5,827.55 = 1,111.21 : x
2. Step 2: Convert to fraction form
   3,884.51/5,827.55 = 1,111.21/x
3. Step 3: Cross multiply
   3,884.51x = 5,827.55 × 1,111.21
4. Step 4: Simplify right side
   3,884.51x = 6,475,611.71
5. Step 5: Solve for x
   x = 6,475,611.71/3,884.51
6. Step 6: Final answer
   x = 1,667.03