Finding the Fourth Proportional to 1,156.00, 1,734.72 and 453.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.00 : 1,734.72 = 453.80 : x
2. Step 2: Convert to fraction form
   1,156.00/1,734.72 = 453.80/x
3. Step 3: Cross multiply
   1,156.00x = 1,734.72 × 453.80
4. Step 4: Simplify right side
   1,156.00x = 787,218.57
5. Step 5: Solve for x
   x = 787,218.57/1,156.00
6. Step 6: Final answer
   x = 680.99