Finding the Fourth Proportional to 2,317.06, 3,477.90 and 1,085.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.06 : 3,477.90 = 1,085.35 : x
2. Step 2: Convert to fraction form
   2,317.06/3,477.90 = 1,085.35/x
3. Step 3: Cross multiply
   2,317.06x = 3,477.90 × 1,085.35
4. Step 4: Simplify right side
   2,317.06x = 3,774,738.77
5. Step 5: Solve for x
   x = 3,774,738.77/2,317.06
6. Step 6: Final answer
   x = 1,629.11