Finding the Fourth Proportional to 1,927.45, 2,659.87 and 1,131.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,927.45 : 2,659.87 = 1,131.25 : x
2. Step 2: Convert to fraction form
   1,927.45/2,659.87 = 1,131.25/x
3. Step 3: Cross multiply
   1,927.45x = 2,659.87 × 1,131.25
4. Step 4: Simplify right side
   1,927.45x = 3,008,977.94
5. Step 5: Solve for x
   x = 3,008,977.94/1,927.45
6. Step 6: Final answer
   x = 1,561.12