Finding the Fourth Proportional to 2,012.50, 2,777.25 and 1,313.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.50 : 2,777.25 = 1,313.88 : x
2. Step 2: Convert to fraction form
   2,012.50/2,777.25 = 1,313.88/x
3. Step 3: Cross multiply
   2,012.50x = 2,777.25 × 1,313.88
4. Step 4: Simplify right side
   2,012.50x = 3,648,973.23
5. Step 5: Solve for x
   x = 3,648,973.23/2,012.50
6. Step 6: Final answer
   x = 1,813.15