Finding the Fourth Proportional to 1,847.72, 2,773.40 and 874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,847.72 : 2,773.40 = 874.50 : x
2. Step 2: Convert to fraction form
   1,847.72/2,773.40 = 874.50/x
3. Step 3: Cross multiply
   1,847.72x = 2,773.40 × 874.50
4. Step 4: Simplify right side
   1,847.72x = 2,425,333.93
5. Step 5: Solve for x
   x = 2,425,333.93/1,847.72
6. Step 6: Final answer
   x = 1,312.61