Finding the Fourth Proportional to 1,374.72, 1,896.90 and 877.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.72 : 1,896.90 = 877.77 : x
2. Step 2: Convert to fraction form
   1,374.72/1,896.90 = 877.77/x
3. Step 3: Cross multiply
   1,374.72x = 1,896.90 × 877.77
4. Step 4: Simplify right side
   1,374.72x = 1,665,041.91
5. Step 5: Solve for x
   x = 1,665,041.91/1,374.72
6. Step 6: Final answer
   x = 1,211.19