Finding the Fourth Proportional to 1,095.32, 1,510.52 and 721.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.32 : 1,510.52 = 721.65 : x
2. Step 2: Convert to fraction form
   1,095.32/1,510.52 = 721.65/x
3. Step 3: Cross multiply
   1,095.32x = 1,510.52 × 721.65
4. Step 4: Simplify right side
   1,095.32x = 1,090,055.60
5. Step 5: Solve for x
   x = 1,090,055.60/1,095.32
6. Step 6: Final answer
   x = 995.20