Finding the Fourth Proportional to 1,987.08, 2,980.01 and 1,374.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.08 : 2,980.01 = 1,374.72 : x
2. Step 2: Convert to fraction form
   1,987.08/2,980.01 = 1,374.72/x
3. Step 3: Cross multiply
   1,987.08x = 2,980.01 × 1,374.72
4. Step 4: Simplify right side
   1,987.08x = 4,096,679.35
5. Step 5: Solve for x
   x = 4,096,679.35/1,987.08
6. Step 6: Final answer
   x = 2,061.66