Finding the Fourth Proportional to 1,089.38, 1,503.61 and 670.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.38 : 1,503.61 = 670.01 : x
2. Step 2: Convert to fraction form
   1,089.38/1,503.61 = 670.01/x
3. Step 3: Cross multiply
   1,089.38x = 1,503.61 × 670.01
4. Step 4: Simplify right side
   1,089.38x = 1,007,424.54
5. Step 5: Solve for x
   x = 1,007,424.54/1,089.38
6. Step 6: Final answer
   x = 924.77