Finding the Fourth Proportional to 2,085.21, 2,877.39 and 1,200.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.21 : 2,877.39 = 1,200.29 : x
2. Step 2: Convert to fraction form
   2,085.21/2,877.39 = 1,200.29/x
3. Step 3: Cross multiply
   2,085.21x = 2,877.39 × 1,200.29
4. Step 4: Simplify right side
   2,085.21x = 3,453,688.06
5. Step 5: Solve for x
   x = 3,453,688.06/2,085.21
6. Step 6: Final answer
   x = 1,656.28