Finding the Fourth Proportional to 1,885.61, 2,827.58 and 1,007.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.61 : 2,827.58 = 1,007.91 : x
2. Step 2: Convert to fraction form
   1,885.61/2,827.58 = 1,007.91/x
3. Step 3: Cross multiply
   1,885.61x = 2,827.58 × 1,007.91
4. Step 4: Simplify right side
   1,885.61x = 2,849,941.12
5. Step 5: Solve for x
   x = 2,849,941.12/1,885.61
6. Step 6: Final answer
   x = 1,511.41