Finding the Fourth Proportional to 1,369.32, 2,054.18 and 720.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.32 : 2,054.18 = 720.10 : x
2. Step 2: Convert to fraction form
   1,369.32/2,054.18 = 720.10/x
3. Step 3: Cross multiply
   1,369.32x = 2,054.18 × 720.10
4. Step 4: Simplify right side
   1,369.32x = 1,479,215.02
5. Step 5: Solve for x
   x = 1,479,215.02/1,369.32
6. Step 6: Final answer
   x = 1,080.26