Finding the Fourth Proportional to 2,870.40, 4,302 and 1,225.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.40 : 4,302 = 1,225.02 : x
2. Step 2: Convert to fraction form
   2,870.40/4,302 = 1,225.02/x
3. Step 3: Cross multiply
   2,870.40x = 4,302 × 1,225.02
4. Step 4: Simplify right side
   2,870.40x = 5,270,052.17
5. Step 5: Solve for x
   x = 5,270,052.17/2,870.40
6. Step 6: Final answer
   x = 1,836.00