Finding the Fourth Proportional to 1,555.76, 2,147.03 and 892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.76 : 2,147.03 = 892.72 : x
2. Step 2: Convert to fraction form
   1,555.76/2,147.03 = 892.72/x
3. Step 3: Cross multiply
   1,555.76x = 2,147.03 × 892.72
4. Step 4: Simplify right side
   1,555.76x = 1,916,696.62
5. Step 5: Solve for x
   x = 1,916,696.62/1,555.76
6. Step 6: Final answer
   x = 1,232.00