Finding the Fourth Proportional to 1,809.78, 2,496.12 and 1,314.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.78 : 2,496.12 = 1,314.06 : x
2. Step 2: Convert to fraction form
   1,809.78/2,496.12 = 1,314.06/x
3. Step 3: Cross multiply
   1,809.78x = 2,496.12 × 1,314.06
4. Step 4: Simplify right side
   1,809.78x = 3,280,051.45
5. Step 5: Solve for x
   x = 3,280,051.45/1,809.78
6. Step 6: Final answer
   x = 1,812.40