Finding the Fourth Proportional to 2,213.33, 3,317.96 and 980.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.33 : 3,317.96 = 980.98 : x
2. Step 2: Convert to fraction form
   2,213.33/3,317.96 = 980.98/x
3. Step 3: Cross multiply
   2,213.33x = 3,317.96 × 980.98
4. Step 4: Simplify right side
   2,213.33x = 3,254,846.56
5. Step 5: Solve for x
   x = 3,254,846.56/2,213.33
6. Step 6: Final answer
   x = 1,470.57