Finding the Fourth Proportional to 2,111.17, 3,167.61 and 1,016.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.17 : 3,167.61 = 1,016.50 : x
2. Step 2: Convert to fraction form
   2,111.17/3,167.61 = 1,016.50/x
3. Step 3: Cross multiply
   2,111.17x = 3,167.61 × 1,016.50
4. Step 4: Simplify right side
   2,111.17x = 3,219,875.57
5. Step 5: Solve for x
   x = 3,219,875.57/2,111.17
6. Step 6: Final answer
   x = 1,525.16