Finding the Fourth Proportional to 1,267.15, 1,900.72 and 573.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267.15 : 1,900.72 = 573.69 : x
2. Step 2: Convert to fraction form
   1,267.15/1,900.72 = 573.69/x
3. Step 3: Cross multiply
   1,267.15x = 1,900.72 × 573.69
4. Step 4: Simplify right side
   1,267.15x = 1,090,415.86
5. Step 5: Solve for x
   x = 1,090,415.86/1,267.15
6. Step 6: Final answer
   x = 860.53