Finding the Fourth Proportional to 1,097.38, 1,513.38 and 723.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.38 : 1,513.38 = 723.88 : x
2. Step 2: Convert to fraction form
   1,097.38/1,513.38 = 723.88/x
3. Step 3: Cross multiply
   1,097.38x = 1,513.38 × 723.88
4. Step 4: Simplify right side
   1,097.38x = 1,095,505.51
5. Step 5: Solve for x
   x = 1,095,505.51/1,097.38
6. Step 6: Final answer
   x = 998.29