Finding the Fourth Proportional to 1,379.42, 1,904.00 and 790.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.42 : 1,904.00 = 790.01 : x
2. Step 2: Convert to fraction form
   1,379.42/1,904.00 = 790.01/x
3. Step 3: Cross multiply
   1,379.42x = 1,904.00 × 790.01
4. Step 4: Simplify right side
   1,379.42x = 1,504,165.57
5. Step 5: Solve for x
   x = 1,504,165.57/1,379.42
6. Step 6: Final answer
   x = 1,090.44