Finding the Fourth Proportional to 2,085.37, 2,878.45 and 1,201.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.37 : 2,878.45 = 1,201.76 : x
2. Step 2: Convert to fraction form
   2,085.37/2,878.45 = 1,201.76/x
3. Step 3: Cross multiply
   2,085.37x = 2,878.45 × 1,201.76
4. Step 4: Simplify right side
   2,085.37x = 3,459,206.07
5. Step 5: Solve for x
   x = 3,459,206.07/2,085.37
6. Step 6: Final answer
   x = 1,658.80