Finding the Fourth Proportional to 2,870.32, 4,304.84 and 1,408

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.32 : 4,304.84 = 1,408 : x
2. Step 2: Convert to fraction form
   2,870.32/4,304.84 = 1,408/x
3. Step 3: Cross multiply
   2,870.32x = 4,304.84 × 1,408
4. Step 4: Simplify right side
   2,870.32x = 6,061,214.72
5. Step 5: Solve for x
   x = 6,061,214.72/2,870.32
6. Step 6: Final answer
   x = 2,111.69