Finding the Fourth Proportional to 2,070.02, 2,856.61 and 1,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.02 : 2,856.61 = 1,138.50 : x
2. Step 2: Convert to fraction form
   2,070.02/2,856.61 = 1,138.50/x
3. Step 3: Cross multiply
   2,070.02x = 2,856.61 × 1,138.50
4. Step 4: Simplify right side
   2,070.02x = 3,252,250.49
5. Step 5: Solve for x
   x = 3,252,250.49/2,070.02
6. Step 6: Final answer
   x = 1,571.12