Finding the Fourth Proportional to 1,810,278, 2,715,766.56 and 688,259.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810,278 : 2,715,766.56 = 688,259.52 : x
2. Step 2: Convert to fraction form
   1,810,278/2,715,766.56 = 688,259.52/x
3. Step 3: Cross multiply
   1,810,278x = 2,715,766.56 × 688,259.52
4. Step 4: Simplify right side
   1,810,278x = 1,869,152,189,017.65
5. Step 5: Solve for x
   x = 1,869,152,189,017.65/1,810,278
6. Step 6: Final answer
   x = 1,032,522.18