Finding the Fourth Proportional to 2,050.74, 2,830.05 and 1,200.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,050.74 : 2,830.05 = 1,200.15 : x
2. Step 2: Convert to fraction form
   2,050.74/2,830.05 = 1,200.15/x
3. Step 3: Cross multiply
   2,050.74x = 2,830.05 × 1,200.15
4. Step 4: Simplify right side
   2,050.74x = 3,396,484.51
5. Step 5: Solve for x
   x = 3,396,484.51/2,050.74
6. Step 6: Final answer
   x = 1,656.22