Finding the Fourth Proportional to 1,886.42, 2,602.23 and 1,140.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.42 : 2,602.23 = 1,140.61 : x
2. Step 2: Convert to fraction form
   1,886.42/2,602.23 = 1,140.61/x
3. Step 3: Cross multiply
   1,886.42x = 2,602.23 × 1,140.61
4. Step 4: Simplify right side
   1,886.42x = 2,968,142.34
5. Step 5: Solve for x
   x = 2,968,142.34/1,886.42
6. Step 6: Final answer
   x = 1,573.43