Finding the Fourth Proportional to 1,445.53, 1,994.69 and 816.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.53 : 1,994.69 = 816.10 : x
2. Step 2: Convert to fraction form
   1,445.53/1,994.69 = 816.10/x
3. Step 3: Cross multiply
   1,445.53x = 1,994.69 × 816.10
4. Step 4: Simplify right side
   1,445.53x = 1,627,852.46
5. Step 5: Solve for x
   x = 1,627,852.46/1,445.53
6. Step 6: Final answer
   x = 1,126.13