Finding the Fourth Proportional to 1,119.61, 1,688.74 and 984.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.61 : 1,688.74 = 984.34 : x
2. Step 2: Convert to fraction form
   1,119.61/1,688.74 = 984.34/x
3. Step 3: Cross multiply
   1,119.61x = 1,688.74 × 984.34
4. Step 4: Simplify right side
   1,119.61x = 1,662,294.33
5. Step 5: Solve for x
   x = 1,662,294.33/1,119.61
6. Step 6: Final answer
   x = 1,484.71