Finding the Fourth Proportional to 1,409.97, 2,111.31 and 1,253.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.97 : 2,111.31 = 1,253.25 : x
2. Step 2: Convert to fraction form
   1,409.97/2,111.31 = 1,253.25/x
3. Step 3: Cross multiply
   1,409.97x = 2,111.31 × 1,253.25
4. Step 4: Simplify right side
   1,409.97x = 2,645,999.26
5. Step 5: Solve for x
   x = 2,645,999.26/1,409.97
6. Step 6: Final answer
   x = 1,876.64