Finding the Fourth Proportional to 1,448.34, 2,153.88 and 1,402.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.34 : 2,153.88 = 1,402.21 : x
2. Step 2: Convert to fraction form
   1,448.34/2,153.88 = 1,402.21/x
3. Step 3: Cross multiply
   1,448.34x = 2,153.88 × 1,402.21
4. Step 4: Simplify right side
   1,448.34x = 3,020,200.73
5. Step 5: Solve for x
   x = 3,020,200.73/1,448.34
6. Step 6: Final answer
   x = 2,085.28