Finding the Fourth Proportional to 2,574.51, 3,861.76 and 1,275.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.51 : 3,861.76 = 1,275.67 : x
2. Step 2: Convert to fraction form
   2,574.51/3,861.76 = 1,275.67/x
3. Step 3: Cross multiply
   2,574.51x = 3,861.76 × 1,275.67
4. Step 4: Simplify right side
   2,574.51x = 4,926,331.38
5. Step 5: Solve for x
   x = 4,926,331.38/2,574.51
6. Step 6: Final answer
   x = 1,913.50