Finding the Fourth Proportional to 1,100.48, 1,651.49 and 580.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.48 : 1,651.49 = 580.34 : x
2. Step 2: Convert to fraction form
   1,100.48/1,651.49 = 580.34/x
3. Step 3: Cross multiply
   1,100.48x = 1,651.49 × 580.34
4. Step 4: Simplify right side
   1,100.48x = 958,425.71
5. Step 5: Solve for x
   x = 958,425.71/1,100.48
6. Step 6: Final answer
   x = 870.92