Finding the Fourth Proportional to 1,881.58, 2,593.86 and 1,320.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,881.58 : 2,593.86 = 1,320.31 : x
2. Step 2: Convert to fraction form
   1,881.58/2,593.86 = 1,320.31/x
3. Step 3: Cross multiply
   1,881.58x = 2,593.86 × 1,320.31
4. Step 4: Simplify right side
   1,881.58x = 3,424,699.30
5. Step 5: Solve for x
   x = 3,424,699.30/1,881.58
6. Step 6: Final answer
   x = 1,820.12