Finding the Fourth Proportional to 2,940.25, 4,407.57 and 1,090.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.25 : 4,407.57 = 1,090.87 : x
2. Step 2: Convert to fraction form
   2,940.25/4,407.57 = 1,090.87/x
3. Step 3: Cross multiply
   2,940.25x = 4,407.57 × 1,090.87
4. Step 4: Simplify right side
   2,940.25x = 4,808,085.89
5. Step 5: Solve for x
   x = 4,808,085.89/2,940.25
6. Step 6: Final answer
   x = 1,635.26