Finding the Fourth Proportional to 1,851.99, 2,553.80 and 1,152.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.99 : 2,553.80 = 1,152.15 : x
2. Step 2: Convert to fraction form
   1,851.99/2,553.80 = 1,152.15/x
3. Step 3: Cross multiply
   1,851.99x = 2,553.80 × 1,152.15
4. Step 4: Simplify right side
   1,851.99x = 2,942,354.91
5. Step 5: Solve for x
   x = 2,942,354.91/1,851.99
6. Step 6: Final answer
   x = 1,588.75