Finding the Fourth Proportional to 1,256.16, 1,729.98 and 1,090.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,256.16 : 1,729.98 = 1,090.29 : x
2. Step 2: Convert to fraction form
   1,256.16/1,729.98 = 1,090.29/x
3. Step 3: Cross multiply
   1,256.16x = 1,729.98 × 1,090.29
4. Step 4: Simplify right side
   1,256.16x = 1,886,179.89
5. Step 5: Solve for x
   x = 1,886,179.89/1,256.16
6. Step 6: Final answer
   x = 1,501.54