Finding the Fourth Proportional to 1,809.34, 2,496.91 and 1,012.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.34 : 2,496.91 = 1,012.70 : x
2. Step 2: Convert to fraction form
   1,809.34/2,496.91 = 1,012.70/x
3. Step 3: Cross multiply
   1,809.34x = 2,496.91 × 1,012.70
4. Step 4: Simplify right side
   1,809.34x = 2,528,626.37
5. Step 5: Solve for x
   x = 2,528,626.37/1,809.34
6. Step 6: Final answer
   x = 1,397.54