Finding the Fourth Proportional to 1,356.04, 1,870.50 and 1,181.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.04 : 1,870.50 = 1,181.80 : x
2. Step 2: Convert to fraction form
   1,356.04/1,870.50 = 1,181.80/x
3. Step 3: Cross multiply
   1,356.04x = 1,870.50 × 1,181.80
4. Step 4: Simplify right side
   1,356.04x = 2,210,556.90
5. Step 5: Solve for x
   x = 2,210,556.90/1,356.04
6. Step 6: Final answer
   x = 1,630.16