Finding the Fourth Proportional to 1,097.07, 1,513.89 and 624.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.07 : 1,513.89 = 624.89 : x
2. Step 2: Convert to fraction form
   1,097.07/1,513.89 = 624.89/x
3. Step 3: Cross multiply
   1,097.07x = 1,513.89 × 624.89
4. Step 4: Simplify right side
   1,097.07x = 946,014.25
5. Step 5: Solve for x
   x = 946,014.25/1,097.07
6. Step 6: Final answer
   x = 862.31