Finding the Fourth Proportional to 2,085.81, 2,878.98 and 1,201.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.81 : 2,878.98 = 1,201.76 : x
2. Step 2: Convert to fraction form
   2,085.81/2,878.98 = 1,201.76/x
3. Step 3: Cross multiply
   2,085.81x = 2,878.98 × 1,201.76
4. Step 4: Simplify right side
   2,085.81x = 3,459,828.61
5. Step 5: Solve for x
   x = 3,459,828.61/2,085.81
6. Step 6: Final answer
   x = 1,658.75