Finding the Fourth Proportional to 1,976.60, 2,962.38 and 742.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.60 : 2,962.38 = 742.88 : x
2. Step 2: Convert to fraction form
   1,976.60/2,962.38 = 742.88/x
3. Step 3: Cross multiply
   1,976.60x = 2,962.38 × 742.88
4. Step 4: Simplify right side
   1,976.60x = 2,200,692.85
5. Step 5: Solve for x
   x = 2,200,692.85/1,976.60
6. Step 6: Final answer
   x = 1,113.37