Finding the Fourth Proportional to 1,962.77, 2,945.16 and 1,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.77 : 2,945.16 = 1,085.10 : x
2. Step 2: Convert to fraction form
   1,962.77/2,945.16 = 1,085.10/x
3. Step 3: Cross multiply
   1,962.77x = 2,945.16 × 1,085.10
4. Step 4: Simplify right side
   1,962.77x = 3,195,800.09
5. Step 5: Solve for x
   x = 3,195,800.09/1,962.77
6. Step 6: Final answer
   x = 1,628.21