Finding the Fourth Proportional to 1,086.35, 1,499.88 and 673.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.35 : 1,499.88 = 673.07 : x
2. Step 2: Convert to fraction form
   1,086.35/1,499.88 = 673.07/x
3. Step 3: Cross multiply
   1,086.35x = 1,499.88 × 673.07
4. Step 4: Simplify right side
   1,086.35x = 1,009,513.37
5. Step 5: Solve for x
   x = 1,009,513.37/1,086.35
6. Step 6: Final answer
   x = 929.28