Finding the Fourth Proportional to 2,275.79, 3,412.59 and 888.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.79 : 3,412.59 = 888.05 : x
2. Step 2: Convert to fraction form
   2,275.79/3,412.59 = 888.05/x
3. Step 3: Cross multiply
   2,275.79x = 3,412.59 × 888.05
4. Step 4: Simplify right side
   2,275.79x = 3,030,533.49
5. Step 5: Solve for x
   x = 3,030,533.49/2,275.79
6. Step 6: Final answer
   x = 1,331.64