Finding the Fourth Proportional to 1,337.79, 1,993.34 and 1,192.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.79 : 1,993.34 = 1,192.30 : x
2. Step 2: Convert to fraction form
   1,337.79/1,993.34 = 1,192.30/x
3. Step 3: Cross multiply
   1,337.79x = 1,993.34 × 1,192.30
4. Step 4: Simplify right side
   1,337.79x = 2,376,659.28
5. Step 5: Solve for x
   x = 2,376,659.28/1,337.79
6. Step 6: Final answer
   x = 1,776.56