Finding the Fourth Proportional to 1,109.08, 1,529.89 and 716.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.08 : 1,529.89 = 716.10 : x
2. Step 2: Convert to fraction form
   1,109.08/1,529.89 = 716.10/x
3. Step 3: Cross multiply
   1,109.08x = 1,529.89 × 716.10
4. Step 4: Simplify right side
   1,109.08x = 1,095,554.23
5. Step 5: Solve for x
   x = 1,095,554.23/1,109.08
6. Step 6: Final answer
   x = 987.80