Finding the Fourth Proportional to 1,866.72, 2,802.52 and 1,253.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866.72 : 2,802.52 = 1,253.16 : x
2. Step 2: Convert to fraction form
   1,866.72/2,802.52 = 1,253.16/x
3. Step 3: Cross multiply
   1,866.72x = 2,802.52 × 1,253.16
4. Step 4: Simplify right side
   1,866.72x = 3,512,005.96
5. Step 5: Solve for x
   x = 3,512,005.96/1,866.72
6. Step 6: Final answer
   x = 1,881.38