Finding the Fourth Proportional to 1,097.33, 1,646.30 and 610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.33 : 1,646.30 = 610.72 : x
2. Step 2: Convert to fraction form
   1,097.33/1,646.30 = 610.72/x
3. Step 3: Cross multiply
   1,097.33x = 1,646.30 × 610.72
4. Step 4: Simplify right side
   1,097.33x = 1,005,428.34
5. Step 5: Solve for x
   x = 1,005,428.34/1,097.33
6. Step 6: Final answer
   x = 916.25