Finding the Fourth Proportional to 1,886.31, 2,602.94 and 1,100.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.31 : 2,602.94 = 1,100.21 : x
2. Step 2: Convert to fraction form
   1,886.31/2,602.94 = 1,100.21/x
3. Step 3: Cross multiply
   1,886.31x = 2,602.94 × 1,100.21
4. Step 4: Simplify right side
   1,886.31x = 2,863,762.10
5. Step 5: Solve for x
   x = 2,863,762.10/1,886.31
6. Step 6: Final answer
   x = 1,518.18