Finding the Fourth Proportional to 1,345.82, 2,011.52 and 1,213.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.82 : 2,011.52 = 1,213.75 : x
2. Step 2: Convert to fraction form
   1,345.82/2,011.52 = 1,213.75/x
3. Step 3: Cross multiply
   1,345.82x = 2,011.52 × 1,213.75
4. Step 4: Simplify right side
   1,345.82x = 2,441,482.40
5. Step 5: Solve for x
   x = 2,441,482.40/1,345.82
6. Step 6: Final answer
   x = 1,814.12