Finding the Fourth Proportional to 1,975.92, 2,978.88 and 1,870.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,975.92 : 2,978.88 = 1,870.08 : x
2. Step 2: Convert to fraction form
   1,975.92/2,978.88 = 1,870.08/x
3. Step 3: Cross multiply
   1,975.92x = 2,978.88 × 1,870.08
4. Step 4: Simplify right side
   1,975.92x = 5,570,743.91
5. Step 5: Solve for x
   x = 5,570,743.91/1,975.92
6. Step 6: Final answer
   x = 2,819.32