Finding the Fourth Proportional to 1,180.07, 1,628.54 and 656.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.07 : 1,628.54 = 656.15 : x
2. Step 2: Convert to fraction form
   1,180.07/1,628.54 = 656.15/x
3. Step 3: Cross multiply
   1,180.07x = 1,628.54 × 656.15
4. Step 4: Simplify right side
   1,180.07x = 1,068,566.52
5. Step 5: Solve for x
   x = 1,068,566.52/1,180.07
6. Step 6: Final answer
   x = 905.51