Finding the Fourth Proportional to 1,871.33, 2,583.50 and 1,242.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.33 : 2,583.50 = 1,242.71 : x
2. Step 2: Convert to fraction form
   1,871.33/2,583.50 = 1,242.71/x
3. Step 3: Cross multiply
   1,871.33x = 2,583.50 × 1,242.71
4. Step 4: Simplify right side
   1,871.33x = 3,210,541.29
5. Step 5: Solve for x
   x = 3,210,541.29/1,871.33
6. Step 6: Final answer
   x = 1,715.65