Finding the Fourth Proportional to 1,445.02, 1,994.87 and 1,002.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.02 : 1,994.87 = 1,002.15 : x
2. Step 2: Convert to fraction form
   1,445.02/1,994.87 = 1,002.15/x
3. Step 3: Cross multiply
   1,445.02x = 1,994.87 × 1,002.15
4. Step 4: Simplify right side
   1,445.02x = 1,999,158.97
5. Step 5: Solve for x
   x = 1,999,158.97/1,445.02
6. Step 6: Final answer
   x = 1,383.48