Finding the Fourth Proportional to 1,852.14, 2,555.72 and 1,223.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.14 : 2,555.72 = 1,223.98 : x
2. Step 2: Convert to fraction form
   1,852.14/2,555.72 = 1,223.98/x
3. Step 3: Cross multiply
   1,852.14x = 2,555.72 × 1,223.98
4. Step 4: Simplify right side
   1,852.14x = 3,128,150.17
5. Step 5: Solve for x
   x = 3,128,150.17/1,852.14
6. Step 6: Final answer
   x = 1,688.94