Finding the Fourth Proportional to 1,002.03, 1,379.53 and 871.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.03 : 1,379.53 = 871.00 : x
2. Step 2: Convert to fraction form
   1,002.03/1,379.53 = 871.00/x
3. Step 3: Cross multiply
   1,002.03x = 1,379.53 × 871.00
4. Step 4: Simplify right side
   1,002.03x = 1,201,563.73
5. Step 5: Solve for x
   x = 1,201,563.73/1,002.03
6. Step 6: Final answer
   x = 1,199.13