Finding the Fourth Proportional to 1,699.25, 2,547.50 and 658.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,699.25 : 2,547.50 = 658.71 : x
2. Step 2: Convert to fraction form
   1,699.25/2,547.50 = 658.71/x
3. Step 3: Cross multiply
   1,699.25x = 2,547.50 × 658.71
4. Step 4: Simplify right side
   1,699.25x = 1,678,060.43
5. Step 5: Solve for x
   x = 1,678,060.43/1,699.25
6. Step 6: Final answer
   x = 987.53