Finding the Fourth Proportional to 1,953.57, 2,930.25 and 720.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,953.57 : 2,930.25 = 720.42 : x
2. Step 2: Convert to fraction form
   1,953.57/2,930.25 = 720.42/x
3. Step 3: Cross multiply
   1,953.57x = 2,930.25 × 720.42
4. Step 4: Simplify right side
   1,953.57x = 2,111,010.71
5. Step 5: Solve for x
   x = 2,111,010.71/1,953.57
6. Step 6: Final answer
   x = 1,080.59