Finding the Fourth Proportional to 1,915.04, 2,870.14 and 874.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.04 : 2,870.14 = 874.73 : x
2. Step 2: Convert to fraction form
   1,915.04/2,870.14 = 874.73/x
3. Step 3: Cross multiply
   1,915.04x = 2,870.14 × 874.73
4. Step 4: Simplify right side
   1,915.04x = 2,510,597.56
5. Step 5: Solve for x
   x = 2,510,597.56/1,915.04
6. Step 6: Final answer
   x = 1,310.99