Finding the Fourth Proportional to 1,870.16, 2,581.90 and 1,207.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.16 : 2,581.90 = 1,207.98 : x
2. Step 2: Convert to fraction form
   1,870.16/2,581.90 = 1,207.98/x
3. Step 3: Cross multiply
   1,870.16x = 2,581.90 × 1,207.98
4. Step 4: Simplify right side
   1,870.16x = 3,118,883.56
5. Step 5: Solve for x
   x = 3,118,883.56/1,870.16
6. Step 6: Final answer
   x = 1,667.71