Finding the Fourth Proportional to 1,379.02, 1,902.96 and 1,029.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.02 : 1,902.96 = 1,029.10 : x
2. Step 2: Convert to fraction form
   1,379.02/1,902.96 = 1,029.10/x
3. Step 3: Cross multiply
   1,379.02x = 1,902.96 × 1,029.10
4. Step 4: Simplify right side
   1,379.02x = 1,958,321.48
5. Step 5: Solve for x
   x = 1,958,321.48/1,379.02
6. Step 6: Final answer
   x = 1,420.09