Finding the Fourth Proportional to 1,353.60, 1,866.24 and 1,090.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.60 : 1,866.24 = 1,090.88 : x
2. Step 2: Convert to fraction form
   1,353.60/1,866.24 = 1,090.88/x
3. Step 3: Cross multiply
   1,353.60x = 1,866.24 × 1,090.88
4. Step 4: Simplify right side
   1,353.60x = 2,035,843.89
5. Step 5: Solve for x
   x = 2,035,843.89/1,353.60
6. Step 6: Final answer
   x = 1,504.02