Finding the Fourth Proportional to 1,869,111.56, 2,803,626.84 and 521,238.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869,111.56 : 2,803,626.84 = 521,238.20 : x
2. Step 2: Convert to fraction form
   1,869,111.56/2,803,626.84 = 521,238.20/x
3. Step 3: Cross multiply
   1,869,111.56x = 2,803,626.84 × 521,238.20
4. Step 4: Simplify right side
   1,869,111.56x = 1,461,357,407,553.29
5. Step 5: Solve for x
   x = 1,461,357,407,553.29/1,869,111.56
6. Step 6: Final answer
   x = 781,846.01