Finding the Fourth Proportional to 2,085.58, 3,116.12 and 2,012.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.58 : 3,116.12 = 2,012.90 : x
2. Step 2: Convert to fraction form
   2,085.58/3,116.12 = 2,012.90/x
3. Step 3: Cross multiply
   2,085.58x = 3,116.12 × 2,012.90
4. Step 4: Simplify right side
   2,085.58x = 6,272,441.15
5. Step 5: Solve for x
   x = 6,272,441.15/2,085.58
6. Step 6: Final answer
   x = 3,007.53