Finding the Fourth Proportional to 1,308.03, 1,805.09 and 710.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.03 : 1,805.09 = 710.53 : x
2. Step 2: Convert to fraction form
   1,308.03/1,805.09 = 710.53/x
3. Step 3: Cross multiply
   1,308.03x = 1,805.09 × 710.53
4. Step 4: Simplify right side
   1,308.03x = 1,282,566.53
5. Step 5: Solve for x
   x = 1,282,566.53/1,308.03
6. Step 6: Final answer
   x = 980.53