Finding the Fourth Proportional to 1,881.57, 2,820.15 and 1,417.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,881.57 : 2,820.15 = 1,417.86 : x
2. Step 2: Convert to fraction form
   1,881.57/2,820.15 = 1,417.86/x
3. Step 3: Cross multiply
   1,881.57x = 2,820.15 × 1,417.86
4. Step 4: Simplify right side
   1,881.57x = 3,998,577.88
5. Step 5: Solve for x
   x = 3,998,577.88/1,881.57
6. Step 6: Final answer
   x = 2,125.13