Finding the Fourth Proportional to 1,379.00, 2,071.00 and 860.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.00 : 2,071.00 = 860.01 : x
2. Step 2: Convert to fraction form
   1,379.00/2,071.00 = 860.01/x
3. Step 3: Cross multiply
   1,379.00x = 2,071.00 × 860.01
4. Step 4: Simplify right side
   1,379.00x = 1,781,086.33
5. Step 5: Solve for x
   x = 1,781,086.33/1,379.00
6. Step 6: Final answer
   x = 1,291.58