Finding the Fourth Proportional to 1,756.17, 2,633.90 and 715.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,756.17 : 2,633.90 = 715.91 : x
2. Step 2: Convert to fraction form
   1,756.17/2,633.90 = 715.91/x
3. Step 3: Cross multiply
   1,756.17x = 2,633.90 × 715.91
4. Step 4: Simplify right side
   1,756.17x = 1,885,618.60
5. Step 5: Solve for x
   x = 1,885,618.60/1,756.17
6. Step 6: Final answer
   x = 1,073.71