Finding the Fourth Proportional to 1,953.17, 2,930.15 and 720.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,953.17 : 2,930.15 = 720.59 : x
2. Step 2: Convert to fraction form
   1,953.17/2,930.15 = 720.59/x
3. Step 3: Cross multiply
   1,953.17x = 2,930.15 × 720.59
4. Step 4: Simplify right side
   1,953.17x = 2,111,429.46
5. Step 5: Solve for x
   x = 2,111,429.46/1,953.17
6. Step 6: Final answer
   x = 1,081.03