Finding the Fourth Proportional to 1,090.94, 1,504.20 and 933.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090.94 : 1,504.20 = 933.91 : x
2. Step 2: Convert to fraction form
   1,090.94/1,504.20 = 933.91/x
3. Step 3: Cross multiply
   1,090.94x = 1,504.20 × 933.91
4. Step 4: Simplify right side
   1,090.94x = 1,404,787.42
5. Step 5: Solve for x
   x = 1,404,787.42/1,090.94
6. Step 6: Final answer
   x = 1,287.69