Finding the Fourth Proportional to 2,861.33, 4,291.38 and 913.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.33 : 4,291.38 = 913.01 : x
2. Step 2: Convert to fraction form
   2,861.33/4,291.38 = 913.01/x
3. Step 3: Cross multiply
   2,861.33x = 4,291.38 × 913.01
4. Step 4: Simplify right side
   2,861.33x = 3,918,051.40
5. Step 5: Solve for x
   x = 3,918,051.40/2,861.33
6. Step 6: Final answer
   x = 1,369.31