Finding the Fourth Proportional to 2,070.52, 2,855.86 and 1,406.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.52 : 2,855.86 = 1,406.22 : x
2. Step 2: Convert to fraction form
   2,070.52/2,855.86 = 1,406.22/x
3. Step 3: Cross multiply
   2,070.52x = 2,855.86 × 1,406.22
4. Step 4: Simplify right side
   2,070.52x = 4,015,953.17
5. Step 5: Solve for x
   x = 4,015,953.17/2,070.52
6. Step 6: Final answer
   x = 1,939.59