Finding the Fourth Proportional to 2,521.32, 3,479.36 and 1,402.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.32 : 3,479.36 = 1,402.20 : x
2. Step 2: Convert to fraction form
   2,521.32/3,479.36 = 1,402.20/x
3. Step 3: Cross multiply
   2,521.32x = 3,479.36 × 1,402.20
4. Step 4: Simplify right side
   2,521.32x = 4,878,758.59
5. Step 5: Solve for x
   x = 4,878,758.59/2,521.32
6. Step 6: Final answer
   x = 1,935.00