Finding the Fourth Proportional to 2,521.60, 3,479.72 and 1,402.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.60 : 3,479.72 = 1,402.48 : x
2. Step 2: Convert to fraction form
   2,521.60/3,479.72 = 1,402.48/x
3. Step 3: Cross multiply
   2,521.60x = 3,479.72 × 1,402.48
4. Step 4: Simplify right side
   2,521.60x = 4,880,237.71
5. Step 5: Solve for x
   x = 4,880,237.71/2,521.60
6. Step 6: Final answer
   x = 1,935.37