Finding the Fourth Proportional to 2,085.01, 3,126.30 and 1,217.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.01 : 3,126.30 = 1,217.50 : x
2. Step 2: Convert to fraction form
   2,085.01/3,126.30 = 1,217.50/x
3. Step 3: Cross multiply
   2,085.01x = 3,126.30 × 1,217.50
4. Step 4: Simplify right side
   2,085.01x = 3,806,270.25
5. Step 5: Solve for x
   x = 3,806,270.25/2,085.01
6. Step 6: Final answer
   x = 1,825.54