Finding the Fourth Proportional to 2,071.98, 2,859.69 and 1,325.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.98 : 2,859.69 = 1,325.90 : x
2. Step 2: Convert to fraction form
   2,071.98/2,859.69 = 1,325.90/x
3. Step 3: Cross multiply
   2,071.98x = 2,859.69 × 1,325.90
4. Step 4: Simplify right side
   2,071.98x = 3,791,666.81
5. Step 5: Solve for x
   x = 3,791,666.81/2,071.98
6. Step 6: Final answer
   x = 1,829.97