Finding the Fourth Proportional to 1,918.76, 2,877.17 and 981.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.76 : 2,877.17 = 981.57 : x
2. Step 2: Convert to fraction form
   1,918.76/2,877.17 = 981.57/x
3. Step 3: Cross multiply
   1,918.76x = 2,877.17 × 981.57
4. Step 4: Simplify right side
   1,918.76x = 2,824,131.82
5. Step 5: Solve for x
   x = 2,824,131.82/1,918.76
6. Step 6: Final answer
   x = 1,471.85