Finding the Fourth Proportional to 2,870.83, 4,302.60 and 1,830.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.83 : 4,302.60 = 1,830.45 : x
2. Step 2: Convert to fraction form
   2,870.83/4,302.60 = 1,830.45/x
3. Step 3: Cross multiply
   2,870.83x = 4,302.60 × 1,830.45
4. Step 4: Simplify right side
   2,870.83x = 7,875,694.17
5. Step 5: Solve for x
   x = 7,875,694.17/2,870.83
6. Step 6: Final answer
   x = 2,743.35