Finding the Fourth Proportional to 1,094.39, 1,510.51 and 721.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.39 : 1,510.51 = 721.42 : x
2. Step 2: Convert to fraction form
   1,094.39/1,510.51 = 721.42/x
3. Step 3: Cross multiply
   1,094.39x = 1,510.51 × 721.42
4. Step 4: Simplify right side
   1,094.39x = 1,089,706.54
5. Step 5: Solve for x
   x = 1,089,706.54/1,094.39
6. Step 6: Final answer
   x = 995.73