Finding the Fourth Proportional to 1,505.30, 2,256.74 and 1,383.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,505.30 : 2,256.74 = 1,383.80 : x
2. Step 2: Convert to fraction form
   1,505.30/2,256.74 = 1,383.80/x
3. Step 3: Cross multiply
   1,505.30x = 2,256.74 × 1,383.80
4. Step 4: Simplify right side
   1,505.30x = 3,122,869.89
5. Step 5: Solve for x
   x = 3,122,869.89/1,505.30
6. Step 6: Final answer
   x = 2,074.58