Finding the Fourth Proportional to 2,558.79, 3,835.59 and 997.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.79 : 3,835.59 = 997.83 : x
2. Step 2: Convert to fraction form
   2,558.79/3,835.59 = 997.83/x
3. Step 3: Cross multiply
   2,558.79x = 3,835.59 × 997.83
4. Step 4: Simplify right side
   2,558.79x = 3,827,266.77
5. Step 5: Solve for x
   x = 3,827,266.77/2,558.79
6. Step 6: Final answer
   x = 1,495.73