Finding the Fourth Proportional to 1,704.63, 2,554.56 and 716.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,704.63 : 2,554.56 = 716.40 : x
2. Step 2: Convert to fraction form
   1,704.63/2,554.56 = 716.40/x
3. Step 3: Cross multiply
   1,704.63x = 2,554.56 × 716.40
4. Step 4: Simplify right side
   1,704.63x = 1,830,086.78
5. Step 5: Solve for x
   x = 1,830,086.78/1,704.63
6. Step 6: Final answer
   x = 1,073.60