Finding the Fourth Proportional to 1,917.34, 2,645.76 and 1,077.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.34 : 2,645.76 = 1,077.98 : x
2. Step 2: Convert to fraction form
   1,917.34/2,645.76 = 1,077.98/x
3. Step 3: Cross multiply
   1,917.34x = 2,645.76 × 1,077.98
4. Step 4: Simplify right side
   1,917.34x = 2,852,076.36
5. Step 5: Solve for x
   x = 2,852,076.36/1,917.34
6. Step 6: Final answer
   x = 1,487.52