Finding the Fourth Proportional to 1,699.72, 2,544.60 and 1,290.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,699.72 : 2,544.60 = 1,290.46 : x
2. Step 2: Convert to fraction form
   1,699.72/2,544.60 = 1,290.46/x
3. Step 3: Cross multiply
   1,699.72x = 2,544.60 × 1,290.46
4. Step 4: Simplify right side
   1,699.72x = 3,283,704.52
5. Step 5: Solve for x
   x = 3,283,704.52/1,699.72
6. Step 6: Final answer
   x = 1,931.91