Finding the Fourth Proportional to 1,730.42, 2,385.25 and 1,131.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,730.42 : 2,385.25 = 1,131.85 : x
2. Step 2: Convert to fraction form
   1,730.42/2,385.25 = 1,131.85/x
3. Step 3: Cross multiply
   1,730.42x = 2,385.25 × 1,131.85
4. Step 4: Simplify right side
   1,730.42x = 2,699,745.36
5. Step 5: Solve for x
   x = 2,699,745.36/1,730.42
6. Step 6: Final answer
   x = 1,560.17