Finding the Fourth Proportional to 1,845.30, 2,547.34 and 1,216.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,845.30 : 2,547.34 = 1,216.16 : x
2. Step 2: Convert to fraction form
   1,845.30/2,547.34 = 1,216.16/x
3. Step 3: Cross multiply
   1,845.30x = 2,547.34 × 1,216.16
4. Step 4: Simplify right side
   1,845.30x = 3,097,973.01
5. Step 5: Solve for x
   x = 3,097,973.01/1,845.30
6. Step 6: Final answer
   x = 1,678.85