Finding the Fourth Proportional to 1,630.74, 2,443.89 and 1,187.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.74 : 2,443.89 = 1,187.49 : x
2. Step 2: Convert to fraction form
   1,630.74/2,443.89 = 1,187.49/x
3. Step 3: Cross multiply
   1,630.74x = 2,443.89 × 1,187.49
4. Step 4: Simplify right side
   1,630.74x = 2,902,094.94
5. Step 5: Solve for x
   x = 2,902,094.94/1,630.74
6. Step 6: Final answer
   x = 1,779.62