Finding the Fourth Proportional to 1,511.76, 2,085.60 and 922.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.76 : 2,085.60 = 922.62 : x
2. Step 2: Convert to fraction form
   1,511.76/2,085.60 = 922.62/x
3. Step 3: Cross multiply
   1,511.76x = 2,085.60 × 922.62
4. Step 4: Simplify right side
   1,511.76x = 1,924,216.27
5. Step 5: Solve for x
   x = 1,924,216.27/1,511.76
6. Step 6: Final answer
   x = 1,272.83