Finding the Fourth Proportional to 1,870.32, 2,580.48 and 1,339.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.32 : 2,580.48 = 1,339.36 : x
2. Step 2: Convert to fraction form
   1,870.32/2,580.48 = 1,339.36/x
3. Step 3: Cross multiply
   1,870.32x = 2,580.48 × 1,339.36
4. Step 4: Simplify right side
   1,870.32x = 3,456,191.69
5. Step 5: Solve for x
   x = 3,456,191.69/1,870.32
6. Step 6: Final answer
   x = 1,847.91