Finding the Fourth Proportional to 2,870.80, 3,962.46 and 1,692.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.80 : 3,962.46 = 1,692.25 : x
2. Step 2: Convert to fraction form
   2,870.80/3,962.46 = 1,692.25/x
3. Step 3: Cross multiply
   2,870.80x = 3,962.46 × 1,692.25
4. Step 4: Simplify right side
   2,870.80x = 6,705,472.94
5. Step 5: Solve for x
   x = 6,705,472.94/2,870.80
6. Step 6: Final answer
   x = 2,335.75