Finding the Fourth Proportional to 819,870.72, 1,229,953.92 and 370,803.84

Step by Step Solution

1. Step 1: Write the proportion equation
   819,870.72 : 1,229,953.92 = 370,803.84 : x
2. Step 2: Convert to fraction form
   819,870.72/1,229,953.92 = 370,803.84/x
3. Step 3: Cross multiply
   819,870.72x = 1,229,953.92 × 370,803.84
4. Step 4: Simplify right side
   819,870.72x = 456,071,636,559.05
5. Step 5: Solve for x
   x = 456,071,636,559.05/819,870.72
6. Step 6: Final answer
   x = 556,272.62