Finding the Fourth Proportional to 1,422.93, 1,964.55 and 1,090.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.93 : 1,964.55 = 1,090.73 : x
2. Step 2: Convert to fraction form
   1,422.93/1,964.55 = 1,090.73/x
3. Step 3: Cross multiply
   1,422.93x = 1,964.55 × 1,090.73
4. Step 4: Simplify right side
   1,422.93x = 2,142,802.62
5. Step 5: Solve for x
   x = 2,142,802.62/1,422.93
6. Step 6: Final answer
   x = 1,505.90