Finding the Fourth Proportional to 1,852.79, 2,554.89 and 1,321.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.79 : 2,554.89 = 1,321.74 : x
2. Step 2: Convert to fraction form
   1,852.79/2,554.89 = 1,321.74/x
3. Step 3: Cross multiply
   1,852.79x = 2,554.89 × 1,321.74
4. Step 4: Simplify right side
   1,852.79x = 3,376,900.31
5. Step 5: Solve for x
   x = 3,376,900.31/1,852.79
6. Step 6: Final answer
   x = 1,822.61