Finding the Fourth Proportional to 1,423.12, 1,962.84 and 1,090.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.12 : 1,962.84 = 1,090.48 : x
2. Step 2: Convert to fraction form
   1,423.12/1,962.84 = 1,090.48/x
3. Step 3: Cross multiply
   1,423.12x = 1,962.84 × 1,090.48
4. Step 4: Simplify right side
   1,423.12x = 2,140,437.76
5. Step 5: Solve for x
   x = 2,140,437.76/1,423.12
6. Step 6: Final answer
   x = 1,504.05