Finding the Fourth Proportional to 1,192.10, 1,787.88 and 606.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,192.10 : 1,787.88 = 606.72 : x
2. Step 2: Convert to fraction form
   1,192.10/1,787.88 = 606.72/x
3. Step 3: Cross multiply
   1,192.10x = 1,787.88 × 606.72
4. Step 4: Simplify right side
   1,192.10x = 1,084,742.55
5. Step 5: Solve for x
   x = 1,084,742.55/1,192.10
6. Step 6: Final answer
   x = 909.94