Finding the Fourth Proportional to 1,880.24, 2,819.91 and 784.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.24 : 2,819.91 = 784.01 : x
2. Step 2: Convert to fraction form
   1,880.24/2,819.91 = 784.01/x
3. Step 3: Cross multiply
   1,880.24x = 2,819.91 × 784.01
4. Step 4: Simplify right side
   1,880.24x = 2,210,844.69
5. Step 5: Solve for x
   x = 2,210,844.69/1,880.24
6. Step 6: Final answer
   x = 1,175.83