Finding the Fourth Proportional to 2,185.14, 3,278.28 and 1,090.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.14 : 3,278.28 = 1,090.02 : x
2. Step 2: Convert to fraction form
   2,185.14/3,278.28 = 1,090.02/x
3. Step 3: Cross multiply
   2,185.14x = 3,278.28 × 1,090.02
4. Step 4: Simplify right side
   2,185.14x = 3,573,390.77
5. Step 5: Solve for x
   x = 3,573,390.77/2,185.14
6. Step 6: Final answer
   x = 1,635.31