Finding the Fourth Proportional to 2,118,293.61, 3,177,412.77 and 520,870.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118,293.61 : 3,177,412.77 = 520,870.53 : x
2. Step 2: Convert to fraction form
   2,118,293.61/3,177,412.77 = 520,870.53/x
3. Step 3: Cross multiply
   2,118,293.61x = 3,177,412.77 × 520,870.53
4. Step 4: Simplify right side
   2,118,293.61x = 1,655,020,673,538.67
5. Step 5: Solve for x
   x = 1,655,020,673,538.67/2,118,293.61
6. Step 6: Final answer
   x = 781,299.00