Finding the Fourth Proportional to 1,457.88, 2,011.59 and 860.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.88 : 2,011.59 = 860.37 : x
2. Step 2: Convert to fraction form
   1,457.88/2,011.59 = 860.37/x
3. Step 3: Cross multiply
   1,457.88x = 2,011.59 × 860.37
4. Step 4: Simplify right side
   1,457.88x = 1,730,711.69
5. Step 5: Solve for x
   x = 1,730,711.69/1,457.88
6. Step 6: Final answer
   x = 1,187.14