Finding the Fourth Proportional to 1,152.69, 1,589.90 and 710.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.69 : 1,589.90 = 710.84 : x
2. Step 2: Convert to fraction form
   1,152.69/1,589.90 = 710.84/x
3. Step 3: Cross multiply
   1,152.69x = 1,589.90 × 710.84
4. Step 4: Simplify right side
   1,152.69x = 1,130,158.34
5. Step 5: Solve for x
   x = 1,130,158.34/1,152.69
6. Step 6: Final answer
   x = 980.45